Panel de navegación

Categoría: Navegación
Tokens: comp.navigation-drawer
Nivel: Compuesto
Se compone de: Modal layer

Descripción general

Web: tanrei-navigation-drawer; schedule
SwiftUI: TanreiNavigationDrawer; schedule
Jetpack Compose: TanreiNavigationDrawer; schedule
Flutter: TanreiNavigationDrawer; schedule
React Native: NavigationDrawer; schedule

Generado a partir de docs/status/status.json, specs/navigation-drawer.spec.json

Una especificación revisada que aún no está en todas las plataformas

Esta página describe el panel de navegación tal como lo define ahora la especificación. Un panel collapsible se estrecha hasta quedar en una columna de iconos, que sustituye al carril de navegación: el panel contraído es el expandido sin sus etiquetas, con cada fila cortada después de su icono, y su botón de menú lo vuelve a ensanchar con todos los iconos en su sitio. El texto badge de un destino pasa a ser trailingText, dibujado de forma más discreta, y un slot trailing contiene un glifo; badge es ahora una insignia sobre el icono. Los elementos group abren y cierran destinos anidados. Las filas miden 48 de alto, la altura de un elemento de menú. responsive deja que el ancho de la ventana elija cómo se presenta el panel. Un destino con href es un enlace, y revealSelected y scrollOffset convierten el panel en la barra lateral de un sitio. El componente web ya hace todo esto, y las demostraciones también. SwiftUI, Compose, Flutter y React Native aparecen arriba como rezagados: hasta que se pongan al día ofrecen la revisión anterior, con filas de 44, badge como texto al final de la fila, sin forma contraída, grupos, destinos de enlace ni presentación adaptable, y con un carril de navegación aparte, y sus ejemplos muestran esa revisión. La density compacta, los grupos que también son destinos (selectableGroups) y el campo de filtro (filterable) son aún más recientes, y por ahora solo están en la web.

Un panel estándar con dos secciones

Un panel que se puede contraer: su botón de menú lo contrae hasta la columna de iconos, donde cada celda muestra su nombre en un tooltip

add

Destinos que son enlaces: el valor del panel indica la página actual, y reveal-selected abre el grupo que la contiene

Un panel que filtra sus filas: escribe en el campo, o pulsa / en cualquier parte de la página para llegar a él

Un panel compacto, para una herramienta que se usa con puntero: filas de 32 y glifos de 16, cada icono anidado donde empieza la etiqueta de su grupo

Grupos que también son destinos: con selectable-groups, la fila de un grupo lo elige y su chevron lo abre y lo cierra

Uso

Un panel de navegación tiene cinco tipos de elemento. Un destination es una fila con un icono opcional, una etiqueta y, al final, un contenido final opcional; con href es un enlace. Un group es una fila que abre y cierra los destinos y grupos que contiene. Una section agrupa destinos y grupos bajo un title (headline en la web) opcional, con un divider opcional delante; las secciones no se anidan, y los grupos no contienen secciones. Un header-button (el primero es el botón de menú) y una main-action se sitúan en la cabecera. En la web son elementos hijos <tanrei-navigation-drawer-item>, <tanrei-navigation-drawer-group> y <tanrei-navigation-drawer-section>, y elementos <tanrei-button> de solo icono y un <tanrei-main-action-button> en los slots header-button y main-action. Las plataformas rezagadas reciben los destinos y las secciones según su estilo propio: vistas TanreiNavigationDrawerItem y TanreiNavigationDrawerSection en SwiftUI y llamadas con esos nombres en Compose, objetos TanreiNavigationDrawerDestination y TanreiNavigationDrawerSection dentro de children: en Flutter, y entradas de destino y de sección de un array items en React Native, donde una sección se distingue por tener sus propios items.

La selección pertenece al panel y se expresa con el valor de un destino, esté donde esté ese destino. change y reselect funcionan como en la barra de navegación. Compose no tiene un valor a nivel de panel: marcas el elemento actual con selected, y su onClick hace tanto de change como de reselect. Flutter selecciona por índice, contado a través de las secciones en el orden de lectura.

Un destino con href es un enlace y no un botón. El navegador lo sigue como sigue cualquier enlace, y el panel no lo selecciona con una pulsación: la página que llega dice qué destino es el actual, al definir el value del panel como el valor de ese destino o, si no tiene valor, como su href tal como está escrito. change y reselect se siguen emitiendo cuando un enlace se activa de la forma habitual. Llevan su href y se pueden cancelar, y así es como un enrutador del lado del cliente se hace cargo de la navegación. Los destinos de enlace están hoy en la web.

La fila de un grupo lo abre y lo cierra, y no elige nada. Cuando un grupo es además un lugar propio (la página de resumen de una sección en un sitio, una carpeta que se muestra al elegirla), activa selectableGroups en el panel y dale al grupo un value o un href: su fila lo elige entonces, como la de un destino, y su chevron pasa a ser un control propio que lo abre y lo cierra. Un grupo sin ninguno de los dos sigue solo abriéndose y cerrándose. Los grupos que son destinos están hoy en la web.

density es regular, el valor por defecto, o compact: filas de 32 con glifos de 16 y una columna de iconos más estrecha, para una herramienta que se usa con puntero y cuyo panel enumera muchos lugares. La densidad compacta está hoy en la web.

filterable dibuja un campo de filtro encima de las filas. Lo que la persona escribe reduce el panel a las filas cuya etiqueta lo contiene, y los grupos que las contienen se abren mientras el filtro está aplicado; al vaciar el campo, el panel vuelve a quedar como estaba. filterValue es el texto, que el panel define mientras la persona escribe, antes de emitir filterChange; tú también lo defines, para devolver un filtro cuando una página se vuelve a dibujar. Las palabras del campo son tuyas: filterLabel le da nombre, y filterPlaceholder, filterCountText («Coincidencias: {count}»), filterEmptyText y filterClearLabel salen de tus palabras cuando los dejas vacíos. El filtro está hoy en la web.

El panel tiene dos variantes, y un mismo producto suele usar las dos: estándar donde la ventana es lo bastante ancha y modal donde no lo es.

Estándar es una región del diseño, no una superposición. Mientras está abierto ocupa su ancho junto al contenido, y mientras está cerrado no ocupa nada. No dibuja velo y nunca retiene el foco.
Modal es una superposición que la persona maneja, y además modal. Se desliza sobre el contenido con un velo, mantiene el foco dentro hasta que se cierra y se cierra solo cuando la persona elige un destino.

Con responsive, el panel toma esa decisión por sí mismo a partir del ancho de la ventana (consulta «Seguir el ancho de la ventana» más abajo).

open muestra u oculta cualquiera de las dos variantes. Un panel modal también se cierra cuando la persona pulsa el velo o Escape, usa la acción de retroceso de la plataforma o lo arrastra hacia su borde, y entonces emite close. En la web, el propio panel vuelve a poner open en false, como hace un diálogo. En las demás plataformas eres tú quien lo mantiene sincronizado a partir del cierre: onClose en Flutter y React Native, el binding isPresented en SwiftUI y el estado del panel en Compose, cuyo confirmValueChange recibe cada cierre.

<tanrei-button variant="text" id="menu" label="Menú"><span slot="icon">menu</span></tanrei-button>

<!-- Modal: un <dialog> en el shadow root, abierto con showModal(). Standard es un <nav> que recibe su nombre de label. -->
<tanrei-navigation-drawer variant="modal" label="Correo" value="inbox">
  <tanrei-navigation-drawer-section headline="Correo">
    <tanrei-navigation-drawer-item value="inbox" label="Bandeja de entrada" icon="inbox" trailing-text="24"></tanrei-navigation-drawer-item>
    <tanrei-navigation-drawer-item value="sent" label="Enviados" icon="send"></tanrei-navigation-drawer-item>
  </tanrei-navigation-drawer-section>
  <tanrei-navigation-drawer-section headline="Etiquetas" divider>
    <tanrei-navigation-drawer-item value="work" label="Trabajo" icon="label" trailing-text="Nuevo"></tanrei-navigation-drawer-item>
  </tanrei-navigation-drawer-section>
</tanrei-navigation-drawer>

<!-- Collapsible: el primer botón de la cabecera es el botón de menú. El panel le responde por sí mismo y emite expandedchange. -->
<tanrei-navigation-drawer collapsible open label="Espacio de trabajo" value="home">
  <tanrei-button slot="header-button" variant="text" label="Menú"><span slot="icon">menu</span></tanrei-button>
  <tanrei-main-action-button slot="main-action" label="Nuevo proyecto"><span slot="icon">add</span></tanrei-main-action-button>
  <span slot="header">Espacio de trabajo</span>
  <tanrei-navigation-drawer-item value="home" label="Inicio" icon="home"></tanrei-navigation-drawer-item>
  <!-- Un grupo: su fila lo abre y lo cierra, y emite toggle. -->
  <tanrei-navigation-drawer-group label="Proyectos" icon="folder">
    <tanrei-navigation-drawer-item value="atlas" label="Atlas" icon="deployed_code"></tanrei-navigation-drawer-item>
  </tanrei-navigation-drawer-group>
  <!-- Una insignia sobre el icono, en las dos formas; el contenido final, solo mientras está expandido. -->
  <tanrei-navigation-drawer-item value="inbox" label="Bandeja de entrada" icon="inbox" badge badge-count="3" badge-label="3 sin leer"></tanrei-navigation-drawer-item>
  <!-- Un enlace que abre una pestaña nueva: la fila expandida termina con open_in_new, y target-label se lee después de su nombre. -->
  <tanrei-navigation-drawer-item label="Centro de ayuda" icon="help" href="/help" target="new" target-label="se abre en una pestaña nueva"></tanrei-navigation-drawer-item>
</tanrei-navigation-drawer>

<!-- La barra lateral de un sitio: todos los destinos son enlaces, y cada página da al panel su propia dirección como value.
     responsive deja que el ancho de la ventana elija la presentación; reveal-selected abre los grupos que contienen la página. -->
<tanrei-navigation-drawer id="sidebar" label="Documentación" value="/components/tabs/" reveal-selected responsive open>
  <tanrei-navigation-drawer-item label="Primeros pasos" href="/getting-started/"></tanrei-navigation-drawer-item>
  <tanrei-navigation-drawer-group label="Componentes">
    <tanrei-navigation-drawer-item label="Botón" href="/components/button/"></tanrei-navigation-drawer-item>
    <tanrei-navigation-drawer-item label="Pestañas" href="/components/tabs/" trailing-text="Nuevo"></tanrei-navigation-drawer-item>
  </tanrei-navigation-drawer-group>
</tanrei-navigation-drawer>

<!-- Una barra lateral que filtra sus filas: "/" en cualquier parte de la página lleva al campo. Las palabras son tuyas. -->
<tanrei-navigation-drawer id="filtered" label="Documentación" value="/components/tabs/" reveal-selected open
  filterable filter-label="Filtrar navegación" filter-placeholder="Filtrar"
  filter-count-text="Coincidencias: {count}" filter-empty-text="Sin coincidencias" filter-clear-label="Borrar">
  <tanrei-navigation-drawer-group label="Componentes">
    <tanrei-navigation-drawer-item label="Botón" href="/components/button/"></tanrei-navigation-drawer-item>
    <tanrei-navigation-drawer-item label="Pestañas" href="/components/tabs/"></tanrei-navigation-drawer-item>
  </tanrei-navigation-drawer-group>
</tanrei-navigation-drawer>

<script type="module">
  import '@tanrei/web/components/navigation-drawer';
  import '@tanrei/web/components/button';
  const drawer = document.querySelector('tanrei-navigation-drawer');
  document.querySelector('#menu').addEventListener('click', () => (drawer.open = true));
  // El panel define su propio value antes de emitir change. Un panel modal se cierra solo a continuación.
  drawer.addEventListener('change', (e) => showFolder(e.detail.value));
  // close sigue a cada cierre de un panel modal: el velo, Escape, un arrastre o un destino.
  drawer.addEventListener('close', onDrawerClosed);
  // Un panel collapsible ya ha tomado la forma que pidió su botón de menú.
  document.querySelector('[collapsible]').addEventListener('expandedchange', (e) => savePreference(e.detail.expanded));

  const sidebar = document.querySelector('#sidebar');
  // El change de un enlace se puede cancelar y lleva su href: aquí un enrutador del lado del cliente se hace cargo de la navegación.
  // Un sitio de documentos separados no escucha nada, y la página siguiente dice el value.
  sidebar.addEventListener('change', (e) => {
    e.preventDefault();
    router.navigate(e.detail.href);
  });
  // Un panel responsive dice en qué lo convirtió el ancho de la ventana: standard, column o modal.
  sidebar.addEventListener('presentationchange', (e) => showMenuButton(e.detail.presentation === 'modal'));

  // El texto del filtro que dejó la persona, guardado para la página siguiente (el panel no guarda nada).
  const filtered = document.querySelector('#filtered');
  filtered.addEventListener('filterchange', (e) => sessionStorage.setItem('filter', e.detail.value));
  filtered.filterValue = sessionStorage.getItem('filter') ?? '';
</script>

import {
  NavigationDrawer,
  NavigationDrawerGroup,
  NavigationDrawerItem,
  NavigationDrawerSection,
} from '@tanrei/react';

// Un panel modal se cierra solo (onClose): mantén open sincronizado ahí.
<NavigationDrawer
  variant="modal"
  label="Correo"
  open={open}
  value={folder}
  onChange={(e) => setFolder(e.detail.value)}
  onClose={() => setOpen(false)}
>
  <NavigationDrawerSection headline="Correo">
    <NavigationDrawerItem value="inbox" label="Bandeja de entrada" icon="inbox" trailingText="24" />
    <NavigationDrawerItem value="sent" label="Enviados" icon="send" />
  </NavigationDrawerSection>
</NavigationDrawer>

// La barra lateral de un sitio: los destinos son enlaces, y la página dice cuál es el actual.
<NavigationDrawer
  label="Documentación"
  open
  responsive
  revealSelected
  value={pathname}
  onChange={(e) => {
    e.preventDefault(); // un enrutador del lado del cliente se hace cargo de la navegación
    navigate(e.detail.href);
  }}
  onPresentationChange={(e) => setPresentation(e.detail.presentation)}
>
  <NavigationDrawerGroup label="Componentes">
    <NavigationDrawerItem label="Botón" href="/components/button/" />
    <NavigationDrawerItem label="Pestañas" href="/components/tabs/" trailingText="Nuevo" />
  </NavigationDrawerGroup>
  <NavigationDrawerItem label="Código fuente" href="https://example.com/tanrei" target="new" targetLabel="se abre en una pestaña nueva" />
</NavigationDrawer>

// Una barra lateral que filtra sus filas: el panel define filterValue por sí mismo mientras la persona escribe.
<NavigationDrawer
  label="Documentación"
  open
  filterable
  filterLabel="Filtrar navegación"
  filterPlaceholder="Filtrar"
  filterCountText="Coincidencias: {count}"
  filterEmptyText="Sin coincidencias"
  filterClearLabel="Borrar"
  filterValue={filter}
  onFilterChange={(e) => setFilter(e.detail.value)}
>
  <NavigationDrawerGroup label="Componentes">
    <NavigationDrawerItem label="Botón" href="/components/button/" />
    <NavigationDrawerItem label="Pestañas" href="/components/tabs/" />
  </NavigationDrawerGroup>
</NavigationDrawer>

import Tanrei

// Estándar: junto al contenido. isPresented lo muestra y lo oculta; elegir un destino escribe en selection.
HStack(spacing: 0) {
    TanreiNavigationDrawer(variant: .standard, isPresented: $sidebarShown, selection: $folder,
                           accessibilityLabel: "Correo", onReselect: { _ in scrollToTop() }) {
        TanreiNavigationDrawerSection("Correo") {
            TanreiNavigationDrawerItem("Bandeja de entrada", icon: "inbox", value: "inbox", badge: "24")
            TanreiNavigationDrawerItem("Enviados", icon: "send", value: "sent")
        }
        TanreiNavigationDrawerSection("Etiquetas", divider: true) {
            TanreiNavigationDrawerItem("Trabajo", icon: "label", value: "work")
        }
    } header: {
        Text("Correo")
    }
    FolderView(folder)
}

// Modal: un modificador sobre el contenido que cubre. Al cerrarse escribe false en el binding.
FolderView(folder)
    .tanreiNavigationDrawer(isPresented: $menuShown, selection: $folder, accessibilityLabel: "Correo") { … }

import io.github.chnotchy.tanrei.components.TanreiNavigationDrawer
import io.github.chnotchy.tanrei.components.TanreiNavigationDrawerItem
import io.github.chnotchy.tanrei.components.TanreiNavigationDrawerSection
import io.github.chnotchy.tanrei.components.rememberTanreiDrawerState
import io.github.chnotchy.tanrei.tokens.TanreiNavigationDrawerVariant

// El panel envuelve la pantalla. drawerState es el open de la especificación; confirmValueChange recibe el close de la especificación.
val drawerState = rememberTanreiDrawerState()
TanreiNavigationDrawer(
    variant = if (wide) TanreiNavigationDrawerVariant.Standard else TanreiNavigationDrawerVariant.Modal,
    drawerState = drawerState,
    contentDescription = "Correo",
    drawerContent = {
        // Tú marcas el elemento actual como selected. Un panel modal se cierra solo después de onClick.
        TanreiNavigationDrawerSection(heading = "Correo") {
            TanreiNavigationDrawerItem(selected = folder == "inbox", onClick = { folder = "inbox" }, label = "Bandeja de entrada", icon = "inbox", badge = "24")
            TanreiNavigationDrawerItem(selected = folder == "sent", onClick = { folder = "sent" }, label = "Enviados", icon = "send")
        }
        TanreiNavigationDrawerSection(heading = "Etiquetas", divider = true) {
            TanreiNavigationDrawerItem(selected = folder == "work", onClick = { folder = "work" }, label = "Trabajo", icon = "label", badge = "Nuevo")
        }
    },
) {
    FolderScreen(folder, onMenu = { drawerState.open() })
}

import 'package:tanrei/tanrei.dart';

// Estándar: una región del diseño, la primera de un Row junto al contenido.
Row(
  children: <Widget>[
    TanreiNavigationDrawer(
      open: sidebarOpen,
      selectedIndex: current, // contado a través de las secciones en el orden de lectura
      onDestinationSelected: (int index) => setState(() => current = index), // change y reselect
      semanticLabel: 'Correo',
      children: const <TanreiNavigationDrawerChild>[
        TanreiNavigationDrawerSection(
          heading: 'Correo',
          children: <TanreiNavigationDrawerChild>[
            TanreiNavigationDrawerDestination(icon: 'inbox', label: 'Bandeja de entrada', badge: '24'),
            TanreiNavigationDrawerDestination(icon: 'send', label: 'Enviados'),
          ],
        ),
        TanreiNavigationDrawerSection(
          heading: 'Etiquetas',
          divider: true,
          children: <TanreiNavigationDrawerChild>[
            TanreiNavigationDrawerDestination(icon: 'label', label: 'Trabajo', badge: 'Nuevo'),
          ],
        ),
      ],
    ),
    const Expanded(child: Page()),
  ],
),

// Modal: el último hijo de un Stack que llena la ventana. Pon open en false desde onClose.
Stack(
  children: <Widget>[
    const Positioned.fill(child: Page()),
    TanreiNavigationDrawer(
      variant: TanreiNavigationDrawerVariant.modal,
      open: menuOpen,
      onClose: () => setState(() => menuOpen = false),
      selectedIndex: current,
      onDestinationSelected: (int index) => setState(() => current = index),
      semanticLabel: 'Correo',
      children: destinations,
    ),
  ],
),

import { useState } from 'react';
import { NavigationDrawer } from '@tanrei/react-native';

const [open, setOpen] = useState(false);
const [folder, setFolder] = useState('inbox');

// Controlado: pon open en false desde onClose. Un panel modal se presenta en un Modal transparente.
<NavigationDrawer
  variant={wide ? 'standard' : 'modal'}
  open={open}
  onClose={() => setOpen(false)}
  accessibilityLabel="Correo"
  value={folder}
  onValueChange={setFolder}
  items={[
    { heading: 'Correo', items: [
      { value: 'inbox', label: 'Bandeja de entrada', icon: 'inbox', badge: '24' },
      { value: 'sent', label: 'Enviados', icon: 'send' },
    ] },
    { heading: 'Etiquetas', divider: true, items: [{ value: 'work', label: 'Trabajo', icon: 'label', badge: 'Nuevo' }] },
  ]}
/>

Especificaciones

Destinos sin iconos, fuera de cualquier sección

Anatomía

Dibujado sobre el fixture standard, tal como lo dibuja el paquete web.

Parte	Descripción
1 `container`	The panel at the start edge, the full height of its parent: expanded, the full drawer; collapsed, the icon column. Standard: part of the layout. Modal: above the content, its end corners rounded. Its color reaches under the system insets at its start, top and bottom.
2 `outline`	The end edge of a standard drawer, and of a collapsible modal drawer's column, which sets it apart from the content beside it.
3 `scrim` · opcional	The modal layer's scrim (MDL-1): it dims everything behind a modal drawer; a press on it closes the drawer.
4 `header` · opcional	The top of the drawer, which stays in place while the items scroll: the header buttons (a menu button first) stacked in the icon column, the header slot's content beside the first of them while expanded, and the main action below them.
5 `header-button` · opcional	An icon-only Button in the header (an item of the header-button kind), on the icon column. While the drawer is collapsible, the first one is its menu button: it widens and narrows the drawer, and carries its expanded state. It stays the Button it is in both forms, with the Button's own size and shape (a circle in the default system).
6 `main-action` · opcional	The screen's main action (an item of the main-action kind), below the header buttons: its icon alone while the drawer is collapsed, its icon and label while expanded, its glyph in the same place in both.
7 `filter`	The filter field, while filterable is true and the drawer is expanded: a Text input of type search below the header, with the search glyph at its start and, at its end, the key hint while it is empty and does not have focus, or a clear button while it holds text. It stays in place while the items scroll.
8 `filter.status`	The line at the top of the results while a filter is applied: how many rows match, in the product's filterCountText, unless filterCountHidden; or, where no row matches, the product's filterEmptyText. Takes no focus and no state.
9 `section` · opcional	A group of items (an item of the section kind) under an optional heading: its divider, its heading and its items, in that order. Not interactive, and never collapsed away.
10 `heading` · opcional	A section's heading: text that names the items under it. Not interactive. Collapsed, its row keeps its height and its text is not drawn.
11 `divider` · opcional	A divider component the drawer draws before a section whose divider is true, across the drawer's inner width in either form.
12 `group` · opcional	An expandable group of destinations (an item of the group kind): a row that opens and closes, and the destinations and groups it holds, whose rows start further in than its own while it is open. Collapsed, one cell.
13 `group.chevron` · opcional	The icon set's expand_more at the end of a group's row, turned half a turn while the group is open. Hidden from assistive technology.
14 `item`	One destination (an item of the destination kind), or a group's row: a cell across the drawer's width, which is its hit area and has the same height and place in both forms. A destination is a button, or a link while it has an href; the two are drawn alike.
15 `item.container`	The destination's box: a row with the corners of a menu's item, never a capsule in the default system. Expanded, the row across the drawer's inner width, a nested one starting further in; collapsed, the same row with its label gone: the box around its icon, as tall as before and with the same corners. It carries hover, focus and press, and is filled as the active indicator while the destination is selected; the fill changes in place and never grows in width.
16 `item.icon-indicator`	The box behind the icon alone, the icon centered in it. The default system leaves it transparent; a system that marks a collapsed destination behind its glyph only (Material's) fills it there and leaves the collapsed item container clear.
17 `item.icon` · opcional	The destination's glyph (its icon), centered on the icon column in both forms. Outlined when unselected, filled when selected.
18 `item.label`	The destination's name: beside the icon while expanded (its label, wrapping). Collapsed, no label is drawn unless collapsedLabels asks for the short label under the icon, on one line. Its label is always its accessible name.
19 `item.trailing` · opcional	The end of an expanded row: the trailing slot's content (a glyph such as open_in_new) or else the destination's trailing text (a count such as "24", a word such as "New"), quieter than the label. Not interactive; part of the destination's description.
20 `item.badge` · opcional	A Tanrei badge anchored to the icon in both forms, drawn from the destination's badge, badgeCount and badgeLabel: a dot or a count (the badge component).
21 `focus-ring`	Gap-then-ring indicator around the item container, shown for keyboard focus.

Medidas

Longitud	Token	Valor (px)
`container` width	`tanrei.comp.navigation-drawer.container.width`	240
`container` padding-inline	`tanrei.comp.navigation-drawer.container.padding-inline`	12

Dibujado sobre el fixture standard, tal como lo dibuja el paquete web.

Propiedades

Propiedad	Tipo	Valor predeterminado	Descripción
`variant`	`standard` \| `modal`	`"standard"`	Standard sits beside the content and takes its width in the layout; modal lays itself over the content with a scrim and holds focus until it closes. One product uses both: standard where the window is wide enough, modal where it is not. A design system may add values. Ignored while responsive is true, when the window's width chooses.
`open`	`boolean`	`false`	Whether the drawer is shown: for a standard drawer, whether it takes its place in the layout (in the form collapsible and expanded choose); for a modal one, whether it is presented over the content (while collapsible, its collapsed column stays in the layout when it is not). While responsive is true it only says whether the drawer is shown over the content in the presentations that are modal, and every change of presentation sets it back to false.
`collapsible`	`boolean`	`false`	Gives the drawer a collapsed form, the icon column. A standard drawer then shows the form expanded chooses; a modal one shows its column in the layout while closed and widens over the content while open. While false the drawer is always expanded and lays its rows out for that form alone.
`expanded`	`boolean`	`true`	The form of a collapsible standard drawer: true for the full drawer, false for the icon column. Ignored while collapsible is false, and by a modal drawer, whose form follows open. It is the user's choice: a change of the window's width never writes it, so a responsive drawer returns to it when the window is wide again.
`collapsedLabels`	`always` \| `selected` \| `never`	`"never"`	Which cells draw their short label under the icon while the drawer is collapsed: none of them (the default: a collapsed drawer is the expanded one with its labels gone), only the selected one's, or all of them, for a product or a design system whose collapsed column is labelled. A label that is not drawn is still the destination's accessible name.
`density`	`regular` \| `compact`	`"regular"`	How much room a row takes, in a tree view's words. regular (a 48 row with a 24 glyph in the default system, a menu item's row) is the drawer of a product used by touch as well as by pointer. compact (a 32 row with a 16 glyph, a tree view's compact row) is for a tool used with a pointer whose drawer lists many places. It sets the rows, the section headings, the paddings, the glyphs, the nesting indent and the collapsed column alike — never the gap between the icon and the label — so both forms follow it; for touch a row is never lower than the touch target in either. A design system may add values.
`chevron`	`start` \| `end` \| `none`	`"start"`	Where a group's chevron is drawn, as the tree view's: start, before its icon (every row then keeps the chevron's room, so the icons of a level stand in one column); end, at the very end of the row, after its trailing content; none, no chevron — the arrow keys still open and close a group, and with a pointer a press on the group's icon does, the icon showing openIcon while the group is open (NVD-68). A collapsible drawer draws start as end, so that every icon keeps its point in both forms.
`guides`	`none` \| `shown` \| `hover`	`"none"`	Whether an open group draws a line down beside what it holds, as the tree view's: none; shown, always; hover, while the pointer is over the drawer or focus is in it, fading in and out (NVD-73).
`indent`	`number`	`null`	How much further a level's rows begin than their group's, as the tree view's: null (auto, the default) lines a row's first part (its chevron, icon or label) up with where its group's label begins, and steps by comp.navigation-drawer.item.nest-indent where the group has neither a start chevron nor an icon; a number steps by that many units of the layout at every level, 0 none (NVD-69). On the web the attribute takes auto or a number.
`highlight`	`indented` \| `full`	`"indented"`	How far the selected fill and the hover and press layers of a nested row reach, as the tree view's: indented, from where the row begins (its indent) to the end; full, across the drawer's whole inner width at every level (NVD-70).
`iconSpace`	`auto` \| `always` \| `never`	`"auto"`	Whether a row without an icon keeps the icon's room, as the tree view's: auto, where another row of its level has an icon, so that the labels of a level line up; always; never (NVD-71).
`expandable`	`boolean`	`true`	Whether groups open and close at all, as the tree view's. While false every group is shown open, draws no chevron, has no toggle and is not exposed as expandable: its row names the list of its items (NVD-72). It is not collapsible, which narrows the drawer itself.
`labelWrap`	`boolean`	`false`	Lets a row's label wrap onto more lines, as the tree view's. While false (the default) a label is one line, cut with an ellipsis, and its full text is shown in a tooltip on hover and keyboard focus wherever it is cut (NVD-75).
`supportingWrap`	`boolean`	`false`	Lets a row's supporting text wrap, as labelWrap lets its label.
`responsive`	`boolean`	`false`	Lets the window's width choose the drawer's presentation (NVD-53): beside the content where the window is wide, its collapsed column beside the content where it is narrower (while collapsible), and over the content alone where it is narrow. While true the drawer ignores variant, shows itself in a wide window whatever open says, and closes whenever the width changes its presentation.
`value`	`string`	`""`	The value of the selected destination (selection is the drawer's, by a destination's value), wherever it stands, in a section, in a group or neither. Empty selects none. The selected destination is the place the product is showing, and it is exposed as the current page: in a product whose pages are separate documents nothing is selected by a press, and each page sets value to the destination that is that page (a link's href stands as its value while it has none, NVD-59).
`revealSelected`	`boolean`	`false`	Opens the groups that hold the selected destination when the drawer first appears and whenever value changes, so that the place the product is showing is drawn and not only the closed group that holds it (NVD-58). A site's sidebar sets it; while false a closed group stays closed and its row shows the selection (NVD-47). The user may still close such a group afterwards.
`selectableGroups`	`boolean`	`false`	Lets a group be a destination as well as a row that opens and closes: a setting of the product's, off by default. While true a group that has a value or an href is a place of its own (NVD-66) — a section's overview page in a site, a folder that is shown when it is chosen — which the drawer's value selects, whose activation emits change or reselect and which an href makes a link; its chevron becomes a control of its own that opens and closes it, and the rest of its row chooses it (NVD-67). A group without either still only opens and closes. While false every group only opens and closes, whatever value or href it has.
`scrollOffset`	`number`	`0`	How far the drawer's items are scrolled from their start, in the units of the layout. The product may set it, before the drawer first appears included, and the drawer scrolls there at once; reading it gives the present distance. It is the handle by which a product keeps a long drawer where the user left it from one page to the next (NVD-61, NVD-62); the drawer stores nothing itself.
`stickyParents`	`boolean`	`false`	Keeps the rows of the open groups that the rows at the top of the drawer belong to pinned there while their items scroll under them, as the tree view's (on by default there, off here) and as VS Code's sticky scroll (NVD-77). Not applied while the drawer is collapsed.
`stickyMax`	`number`	`2`	At most how many group rows are pinned, one per level, the innermost winning, as VS Code keeps its innermost scopes (NVD-77).
`loadingLabel`	`string`	`""`	What the loading row under a group that is fetching its items says ("Loading…"), and its accessible name, as the tree view's: Tanrei ships no words of its own.
`filterable`	`boolean`	`false`	Draws a filter field above the items: what a person types there narrows the drawer to the rows whose label holds it, opening for the time being the groups that hold them, and the drawer comes back as it was when the field is emptied. Off by default: a product that filters on a server, ranks, or matches in another way leaves it off and gives the drawer the items that match, as before.
`filterValue`	`string`	`""`	The filter text: what the filter field holds. The drawer sets it when the person types and emits filterChange; the product may set it too (a filter given back when a page is rendered again). Empty, or only white space, applies no filter.
`filterLabel`	`string`	`""`	Names the filter field for assistive technology, in the product's language: what it narrows ("Filter navigation", "Filter files"). Required while filterable is true. It names this one field, so it is not one of the product's words set once.
`filterPlaceholder`	`string`	`""`	The hint the filter field shows while it is empty ("Filter"), in the product's language. Never a replacement for filterLabel. The product's: Tanrei has no words for it. Empty reads the product's words; with neither, the field shows no hint.
`filterEmptyText`	`string`	`""`	What the drawer draws at the top of the results and says while a filter is applied and no row matches ("No matches"), in the product's language. The product's: Tanrei has no words for it. Empty reads the product's words; with neither, nothing is drawn in its place and it is reported.
`filterCountText`	`string`	`""`	What the drawer draws quietly at the top of the results (NVD-90) and says to assistive technology once the result of a filter has settled (NVD-91), with {count} where the number of rows that match goes ("Matches: {count}"), in the product's language. filterCountHidden leaves it undrawn and still said. The product's: Tanrei has no words for it. Empty reads the product's words; with neither, no count is drawn or said and it is reported.
`filterCountHidden`	`boolean`	`false`	Does not draw the count at the top of the results (NVD-90); it is still said to assistive technology (NVD-91). The words for a filter that matches nothing are drawn either way. A drawer whose results are counted elsewhere on the screen, or where the rows left say enough, turns it on.
`filterClearLabel`	`string`	`""`	The accessible name of the filter field's clear button ("Clear"), in the product's language. Required while the field can hold text. Empty reads the product's words.
`filterShortcut`	`strings`	`/`	The key that moves focus to the filter field from anywhere in the window, in the keyboard shortcut component's key names, one chord (["/"], the default). While filterable is true the drawer draws it as a hint in the empty field, exposes it as the field's keyboard shortcut and answers it itself while it is shown (NVD-87); an app shell answers it for a drawer it has closed over its content (APS-33). Pressed while focus is in a field, or with a key held down, it does nothing. An empty list draws no hint and binds nothing: a product that already gives "/" another meaning sets its own chord or none.
`label`	`string`	`""`	Names the drawer for assistive technology ("Mail"): the navigation landmark on the web, and the modal drawer as a whole on every platform.

Slots

Slot	Descripción
`header`	Content the product puts in the header beside the first header button (a title, an account switcher); the drawer does not restyle it. Drawn only while the drawer is expanded; collapsed, its row keeps its height.

Eventos

Evento	Descripción
`change`	The user activated a destination that is not the selected one, or a group that is one (NVD-66); carries its value and, for a link, its href. For a link it comes before the link is followed, only for an activation that follows it in place (NVD-60), and a product that cancels it follows the link itself.
`reselect`	The user activated the destination that is already selected; carries its value and, for a link, its href, as change does.
`close`	A modal drawer closed, or asks its controlled owner to close it: by the scrim, Escape, the platform's back action, a drag toward its edge, its menu button, or after a destination was activated.
`expandedChange`	The user asked a collapsible drawer for its other form, with its menu button or a group's cell in the collapsed drawer; carries true to expand and false to collapse. For a collapsible modal drawer, true asks it to open.
`presentationChange`	A responsive drawer decided its presentation for the first time, or the window's width changed it; carries standard (beside the content), column (its collapsed column beside the content, widening over it) or modal (over the content alone). A product shows its own menu button while the presentation is modal.
`filterChange`	The person changed the filter text — typing, deleting, pasting, dictating, an input method committing text, the clear button or Escape; carries the new text. Not emitted when the product sets filterValue. It is the product's cue to keep the text where it keeps a page's state.

Elementos

Los tipos de elemento que el componente repite. Un fixture enumera sus elementos en orden; cada plataforma nombra cada tipo según su propio estilo.

`destination`

One destination of the drawer: an icon, a label, optional trailing content at the end of its row and an optional badge on its icon. Collapsed, its icon alone. With an href it is a link to that address and not a button.

Propiedad	Tipo	Valor predeterminado	Descripción
`value`	`string`	`""`	What identifies the destination. The drawer's value selects the destination whose value equals it; change and reselect carry it. Unique within the drawer. Empty on a link, its href stands as its value.
`href`	`string`	`""`	The address the destination leads to. Not empty, the destination is a link and not a button (NVD-59): it is followed as the platform follows a link, and the drawer does not select it by itself (NVD-60). Empty, the destination is a button and the product moves on change. As the Button's href (a control with a destination is a link).
`target`	`same` \| `new`	`"same"`	Where a link opens, as the Button's target. same: where the person is. new: a new context — a new tab or window on the web, outside the current screen elsewhere — which the expanded row marks with the glyph open_in_new at its end unless the product put trailing content there, and says through targetLabel (NVD-63). A link that opens elsewhere is never selected by a press (NVD-60). Ignored without href.
`targetLabel`	`string`	`""`	What assistive technology reads after the link's name while target is new ("opens in a new tab"), as the Button's targetLabel: Tanrei ships no words of its own. Required while target is new; ignored otherwise.
`label`	`string`	`""`	Its name, drawn beside the icon while the drawer is expanded and always its accessible name. Required.
`supportingText`	`string`	`""`	A few words about the row ("3 new", "shared with the team"), under its label or after it (supportingPosition), quieter than the label, read as its description after its name. Empty draws none (NVD-74).
`supportingPosition`	`below` \| `inline`	`"below"`	Where the supporting text stands, as the tree view's: below, on a line of its own under the label; inline, after the label on its line (NVD-74).
`shortLabel`	`string`	`""`	What the collapsed drawer draws under the icon, on one line ("Files" for "My files"), where collapsedLabels asks for labels. Empty draws the label, truncated if it does not fit. It should be a part of the label, which stays the accessible name.
`icon`	`string`	`""`	The name of its glyph in the system's icon set, drawn in the destination's own icon style: outlined while unselected, filled while selected. Empty draws no icon; give every destination of a drawer an icon, or none, and every top-level one an icon in a collapsible drawer.
`disabled`	`boolean`	`false`	Makes it unavailable. It keeps its place, draws its disabled look, cannot be activated and leaves the focus order.
`trailingText`	`string`	`""`	Short text at the end of the expanded row, a count or a word ("24", "New"), quieter than the label. Empty draws none; the trailing slot's content, when there is any, is drawn instead.
`badge`	`boolean`	`false`	Draws a Tanrei badge (the badge component) on the icon, in both forms, from badgeCount and badgeLabel.
`badgeCount`	`number`	`null`	The badge's count, as the badge component's count: null draws the dot, 0 draws nothing, above 0 the number (above 999 as 999+). Ignored while badge is false.
`badgeLabel`	`string`	`""`	The badge's label, as the badge component's: what assistive technology reads after the destination's name and state ("3 unread"). A dot needs one. Ignored while badge is false.

Slot	Descripción
`trailing`	Content at the end of the expanded row, in place of trailingText: a glyph (open_in_new for a destination that opens elsewhere), a short text. Not interactive. A count belongs in trailingText, and a badge on the icon (badge): a Badge needs an anchor, and the end of the row has none. A fixture item's content is a glyph drawn here.

Especificación	Web	SwiftUI	Jetpack Compose	Flutter	React Native
Elemento	`tanrei-navigation-drawer-item`	`TanreiNavigationDrawerItem`	`TanreiNavigationDrawerItem`	`TanreiNavigationDrawerDestination`	`NavigationDrawerDestination`
`value` · Propiedad	`value`	`value`	`selected`	`children`	`value`
`href` · Propiedad	`href`	`destination`	`href`	`href`	`href`
`target` · Propiedad	`target`	`target`	`target`	`target`	`target`
`targetLabel` · Propiedad	`targetLabel`	`targetLabel`	`targetLabel`	`targetSemanticLabel`	`targetLabel`
`label` · Propiedad	`label`	`title`	`label`	`label`	`label`
`supportingText` · Propiedad	`supportingText`	`supportingText`	`supportingText`	`supportingText`	`supportingText`
`supportingPosition` · Propiedad	`supportingPosition`	`supportingPosition`	`supportingPosition`	`supportingPosition`	`supportingPosition`
`shortLabel` · Propiedad	`shortLabel`	`shortTitle`	`shortLabel`	`shortLabel`	`shortLabel`
`icon` · Propiedad	`icon`	`icon`	`icon`	`icon`	`icon`
`disabled` · Propiedad	`disabled`	`disabled`	`enabled`	`enabled`	`disabled`
`trailingText` · Propiedad	`trailingText`	`trailingText`	`trailingText`	`trailingText`	`trailingText`
`badge` · Propiedad	`badge`	`badge`	`badge`	`badge`	`badge`
`badgeCount` · Propiedad	`badgeCount`	`count`	`count`	`count`	`count`
`badgeLabel` · Propiedad	`badgeLabel`	`label`	`contentDescription`	`semanticLabel`	`label`
Notas	`icon` is the glyph's name; none, no icon. `short-label`, `trailing-text`, `badge-count` and `badge-label` are attributes; the trailing slot is `trailing`. `badge` is the boolean of the icon badge; a destination's trailing text is `trailing-text`. `href` makes the destination a link: the cell is an `<a href>` in the item's shadow root. `target` is the `target` attribute with the values `same` and `new` (the HTML spellings `_self` and `_blank` are read as those two), `targetLabel` the `target-label` attribute, and `rel` (to which `new` adds `noopener`) and `download` are web-only and forwarded to the anchor, all as `<tanrei-button>`'s. Space is not handled on it. With no `value` attribute the item's `value` property reads its `href` attribute as written (not the resolved URL).	`TanreiNavigationDrawerItem(_ title: String, shortTitle: String = "", icon: String? = nil, value: Value, trailingText: String = "", badge: TanreiNavigationBadge? = nil) { trailing }`, with the bar's `TanreiNavigationBadge(count:, label:)`. `disabled` follows `.disabled(_:)`. `destination: URL? = nil` makes it a SwiftUI `Link` (the link trait), opened by the environment's `openURL` after the selection callback, which an app that routes addresses itself answers with its own `OpenURLAction`; `target: TanreiLinkTarget = .same` and `targetLabel` (the accessibility hint), as the Button's.	`TanreiNavigationDrawerItem(selected, onClick, label, shortLabel = "", icon = null, trailingText = "", badge = null, enabled = true, trailing = null)`; `icon` is the glyph's name, `null` for none; `badge` is the bar's `TanreiNavigationBadge(count, contentDescription)`; `trailing` is a composable slot. `enabled` is the inverse flag. `href: String? = null` makes it a link: opened through `LocalUriHandler.current` after `onClick` (an app that routes addresses itself provides its own `UriHandler`); Compose has no link role for a clickable element, so the node drops `Role.Button` and carries no role; `target: TanreiLinkTarget = TanreiLinkTarget.Same`, and `targetLabel` is appended to the state description, as the Button's.	`TanreiNavigationDrawerDestination(icon:, label:, shortLabel: '', trailingText: '', trailing: null, badge: null, enabled: true)`; `icon` is the glyph's name, null for none; `badge: TanreiNavigationBadge(count:, semanticLabel:)`, as the bar's; `trailing` is a widget. Its value is its index among the destinations of `children`. `href: Uri? = null` makes it a link (`Semantics(link: true)` with the address as its `linkUrl`), opened by the nearest `TanreiLinkOpener` after `onDestinationSelected`; `target` is a `TanreiLinkTarget` and `targetSemanticLabel` the semantics hint, as the Button's.	An entry of `items`: `{ value, label, shortLabel?, icon?, trailingText?, trailing?, badge?: { count?, label? }, disabled? }`, where `icon` is the glyph's name and `trailing` a React node; the badge has the navigation bar's shape. `href?: string` makes it a link (`accessibilityRole="link"`); `onValueChange` receives the value and the href, and `Linking.openURL(href)` follows it unless the product handles it; `target` is `"same" \| "new"` and `targetLabel` the `accessibilityHint`, as the Button's.

`group` · grupo: contiene elementos

A group of destinations under a row that opens and closes it: an icon, a label and a chevron. It holds destinations and groups, not sections, and their rows start further in than its own. While the drawer's selectableGroups is true and it has a value or an href, it is a destination as well (NVD-66): its row chooses it and its chevron opens and closes it.

Propiedad	Tipo	Valor predeterminado	Descripción
`label`	`string`	`""`	Its name, drawn in its row and used as the accessible name of its row and of the list of its items. Required.
`shortLabel`	`string`	`""`	What the collapsed drawer draws under its icon where collapsedLabels asks for labels; empty draws the label, as a destination's.
`icon`	`string`	`""`	The name of its glyph in the system's icon set, drawn as a destination's icon.
`openIcon`	`string`	`""`	A second glyph, drawn in the icon's place while the group is open (folder_open beside folder), as the tree view's. Ignored while icon is empty.
`supportingText`	`string`	`""`	A few words about the group ("3 new", "shared with the team"), under its label or after it (supportingPosition), quieter than the label, read as its description after its name. Empty draws none (NVD-74).
`supportingPosition`	`below` \| `inline`	`"below"`	Where the supporting text stands, as the tree view's: below, on a line of its own under the label; inline, after the label on its line (NVD-74).
`trailingText`	`string`	`""`	Short text at the end of the group's expanded row (a count), before an end chevron, as a destination's; the trailing slot's content, when there is any, is drawn instead.
`disabled`	`boolean`	`false`	Makes its row unavailable: it keeps its place and its open state, draws its disabled look, cannot be toggled and leaves the focus order. Its items keep their own disabled.
`open`	`boolean`	`false`	Whether its items are shown under its row while the drawer is expanded.
`loading`	`boolean`	`false`	Says that the product is fetching the group's items: while the group is open a loading row is drawn under it, after any items it already holds, and the list of its items is exposed as busy (NVD-76).
`value`	`string`	`""`	What identifies the group as a destination, read only while the drawer's selectableGroups is true (NVD-66): the drawer's value selects the group whose value equals it, as it selects a destination, and change and reselect carry it. Unique among the drawer's destinations and groups. Empty on a link, its href stands as its value; empty with no href, the group is not a destination and only opens and closes.
`href`	`string`	`""`	The address the group leads to as a destination, read only while the drawer's selectableGroups is true: not empty, its row is a link and not a button (NVD-59, NVD-60), opened where the person is. Ignored while selectableGroups is false.

Slot	Descripción
`trailing`	Content at the end of the group's expanded row, before an end chevron, in place of trailingText: a glyph of the icon set, as a destination's trailing slot. Not interactive. A count belongs in trailingText.

Evento	Descripción
`toggle`	The user opened or closed the group from its row, or from its cell in the collapsed drawer, or the drawer opened it to show the selected destination (NVD-58); carries its new open state.

Especificación	Web	SwiftUI	Jetpack Compose	Flutter	React Native
Elemento	`tanrei-navigation-drawer-group`	`TanreiNavigationDrawerGroup`	`TanreiNavigationDrawerGroup`	`TanreiNavigationDrawerGroup`	`NavigationDrawerGroup`
`label` · Propiedad	`label`	`title`	`label`	`label`	`label`
`shortLabel` · Propiedad	`shortLabel`	`shortTitle`	`shortLabel`	`shortLabel`	`shortLabel`
`icon` · Propiedad	`icon`	`icon`	`icon`	`icon`	`icon`
`openIcon` · Propiedad	`openIcon`	`openIcon`	`openIcon`	`openIcon`	`openIcon`
`supportingText` · Propiedad	`supportingText`	`supportingText`	`supportingText`	`supportingText`	`supportingText`
`supportingPosition` · Propiedad	`supportingPosition`	`supportingPosition`	`supportingPosition`	`supportingPosition`	`supportingPosition`
`trailingText` · Propiedad	`trailingText`	`trailingText`	`trailingText`	`trailingText`	`trailingText`
`disabled` · Propiedad	`disabled`	`disabled`	`enabled`	`enabled`	`disabled`
`open` · Propiedad	`open`	`isExpanded`	`expanded`	`expanded`	`open`
`loading` · Propiedad	`loading`	`loading`	`loading`	`loading`	`loading`
`value` · Propiedad	`value`	`value`	`selected`	`value`	`value`
`href` · Propiedad	`href`	`destination`	`href`	`href`	`href`
`toggle` · Evento	`toggle`	`isExpanded`	`onExpandedChange`	`onExpansionChanged`	`onToggle`
Notas	Holds `<tanrei-navigation-drawer-item>` and `<tanrei-navigation-drawer-group>` children. Its row is a `<button aria-expanded aria-controls>` and its items a nested list labelled by it; `open` is reflected. `toggle` bubbles, with `detail.open`; the drawer's own `expandedchange` is a different event. While the drawer's `selectable-groups` is set and the group has a `value` or an `href`, its row is the destination — an `<a href>` or a `<button>` with `aria-current="page"` while selected — and its chevron a second `<button aria-expanded aria-controls>` after it, named by the group's label; a group without either keeps the one row button. The group's `value` property reads its `href` attribute while it has no `value`, as an item's does.	`TanreiNavigationDrawerGroup(_ title: String, shortTitle: String = "", icon: String? = nil, isExpanded: Binding<Bool>) { items }`, as SwiftUI's `DisclosureGroup` binds its state; toggling writes the binding. `disabled` follows `.disabled(_:)`.	`TanreiNavigationDrawerGroup(label, expanded, onExpandedChange, shortLabel = "", icon = null, enabled = true) { … }`; the row has `Modifier.semantics { expand() / collapse() }` and the expanded state. `enabled` is the inverse flag.	`TanreiNavigationDrawerGroup(label:, icon:, shortLabel: '', expanded:, onExpansionChanged:, enabled: true, children: [...])`, controlled, with `ExpansionTile`'s callback name; its row carries `Semantics(expanded:)`.	An entry `{ label, shortLabel?, icon?, disabled?, open, onToggle, groupItems: (NavigationDrawerDestination \| NavigationDrawerGroup)[] }`; its `groupItems` array tells it from a section's `items`.

`section` · grupo: contiene elementos

A group of destinations and groups under an optional heading, with an optional divider before it. It is not interactive and does not nest.

Propiedad	Tipo	Valor predeterminado	Descripción
`title`	`string`	`""`	The text that names the items under it, exposed as a heading. Empty draws no heading row.
`divider`	`boolean`	`false`	Draws a divider (the divider component) before the section, to set it apart from what is above it.

Especificación	Web	SwiftUI	Jetpack Compose	Flutter	React Native
Elemento	`tanrei-navigation-drawer-section`	`TanreiNavigationDrawerSection`	`TanreiNavigationDrawerSection`	`TanreiNavigationDrawerSection`	`NavigationDrawerSection`
`title` · Propiedad	`headline`	`heading`	`heading`	`heading`	`heading`
`divider` · Propiedad	`divider`	`divider`	`divider`	`divider`	`divider`
Notas	Holds `<tanrei-navigation-drawer-item>` and `<tanrei-navigation-drawer-group>` children. It draws a `<tanrei-divider>` before itself while `divider` is set, and its heading as a heading element (`role="heading"`, level 2 unless a web-only `heading-level` says otherwise).	`TanreiNavigationDrawerSection(_ heading: String = "", divider: Bool = false) { items }`, as SwiftUI's `Section`; the heading carries the header trait.	`TanreiNavigationDrawerSection(heading = "", divider = false) { … }`, a composable whose content lambda holds its items; the heading has `Modifier.semantics { heading() }` and the divider is a `TanreiDivider`.	`TanreiNavigationDrawerSection(heading: '', divider: false, children: [...])`; the heading is wrapped in `Semantics(header: true)` and the divider is a `TanreiDivider`.	An entry `{ heading?, divider?, items: (NavigationDrawerDestination \| NavigationDrawerGroup)[] }`; its `items` array tells it from a destination.

`header-button`

An icon-only Button in the header, on the icon column (a menu button): a Button of the text variant and the medium size with an icon and no label, unless the product sets otherwise, which the drawer lays out and does not restyle, resize or reshape in either form. While the drawer is collapsible the first one is its menu button.

Propiedad	Tipo	Valor predeterminado	Descripción
`label`	`string`	`""`	Its accessible name, as the Button's label. Required.

Slot	Descripción
`icon`	Its glyph, as the Button's icon slot. A fixture item's content is this glyph.

Evento	Descripción
`click`	The button was activated, as the Button's click.

Especificación	Web	SwiftUI	Jetpack Compose	Flutter	React Native
Elemento	`tanrei-button`	`TanreiButton`	`TanreiButton`	`TanreiButton`	`Button`
`label` · Propiedad	`label`	`label`	`contentDescription`	`semanticLabel`	`accessibilityLabel`
`click` · Evento	`click`	`action`	`onClick`	`onPressed`	`onPress`
Notas	An icon-only `<tanrei-button>` child with `slot="header-button"`; the glyph is its content.	An icon-only `TanreiButton` in the `headerButtons` view builder; the drawer adds the expanded value to the first.	An icon-only `TanreiButton` in the `headerButtons` lambda; the drawer adds the expanded state to the first one's semantics.	An icon-only `TanreiButton` in `headerButtons:`; the drawer wraps the first in `Semantics(expanded:)`.	An icon-only `Button` element in `headerButtons`; the drawer adds `accessibilityState.expanded` to the first.

`main-action`

The screen's main action, below the header buttons: the Main Action Button component, whose extended the drawer sets from its own form (collapsed to its icon while the drawer is collapsed). The drawer lays it out and does not restyle it.

Propiedad	Tipo	Valor predeterminado	Descripción
`label`	`string`	`""`	Its label, drawn while the drawer is expanded and always its accessible name, as the Main Action Button's. Required.

Slot	Descripción
`icon`	Its glyph, as the Main Action Button's icon slot. A fixture item's content is this glyph.

Evento	Descripción
`click`	The button was activated, as the Main Action Button's click.

Especificación	Web	SwiftUI	Jetpack Compose	Flutter	React Native
Elemento	`tanrei-main-action-button`	`TanreiMainActionButton`	`TanreiMainActionButton`	`TanreiMainActionButton`	`MainActionButton`
`label` · Propiedad	`label`	`title`	`text`	`label`	`label`
`click` · Evento	`click`	`action`	`onClick`	`onPressed`	`onPress`
Notas	A `<tanrei-main-action-button>` child with `slot="main-action"`; the glyph is its `icon` slot. The drawer sets its `extended` (the inverse `collapsed` attribute).	A `TanreiMainActionButton` in the `mainAction` view builder; the drawer sets its `isExtended` from its own form.	A `TanreiMainActionButton` in the `mainAction` lambda; the drawer passes its form as `expanded`.	A `TanreiMainActionButton` as `mainAction:`; the drawer sets its `isExtended` from its own form.	A `MainActionButton` element as `mainAction`; the drawer sets its `extended`.

Estados

Comportamiento

Requisitos en formato EARS. Cada implementación de plataforma se prueba contra estos identificadores. El texto de los requisitos se muestra tal como está en la especificación, en inglés.

ID	Requisito
`NVD-1`	WHEN the user activates a destination by pointer, touch, Enter or Space (Enter only for a destination that is a link, and for a link only an activation that NVD-60 counts) THE navigation drawer SHALL emit change exactly once with the destination's value WHILE it is not the selected destination, and reselect exactly once with its value WHILE it is.
`NVD-2`	WHILE a destination's disabled is true THE navigation drawer SHALL NOT emit change or reselect for it, SHALL NOT make it focusable and SHALL expose it as disabled to assistive technology.
`NVD-3`	THE navigation drawer SHALL draw the destination whose value equals the drawer's value, in a section, in a group or neither, from the selected parts and every other destination from the unselected parts: WHILE the drawer is expanded, from selected (comp.navigation-drawer.selected.item.container.color, comp.navigation-drawer.selected.item.icon-indicator.color, comp.navigation-drawer.selected.item.icon.color, comp.navigation-drawer.selected.item.label.color, comp.navigation-drawer.selected.item.trailing-text.color, comp.navigation-drawer.selected.item.trailing-icon.color) and unselected; WHILE it is collapsed, from collapsed-selected (comp.navigation-drawer.collapsed-selected.item.container.color, comp.navigation-drawer.collapsed-selected.item.icon-indicator.color, comp.navigation-drawer.collapsed-selected.item.icon.color, comp.navigation-drawer.collapsed-selected.item.label.color) and collapsed-unselected. IF no destination's value equals a value that is not empty THE navigation drawer SHALL draw every destination unselected, and in debug builds report the value.
`NVD-4`	WHILE a destination or a group's row is hovered, keyboard-focused or pressed THE navigation drawer SHALL render its item container, icon indicator, icon, label, trailing content and opacity from the component tokens of its condition in the highest-precedence active state, with precedence pressed over focused over hovered; focus gained by pointer or touch SHALL NOT select the focused state.
`NVD-5`	WHEN a destination or a group's row receives keyboard focus THE navigation drawer SHALL show the focus ring around its item container without animation; focus gained by pointer or touch SHALL NOT show it.
`NVD-6`	THE navigation drawer SHALL make each cell (a destination's or a group's row) its hit area, across the drawer's full width inside its insets, however deep it is nested (NVD-13), and the cell's height with half of comp.navigation-drawer.container.gap.regular above and below it, in both forms, and SHALL NOT let it fall below sys.target.pointer high for a fine pointer WHILE density is regular, nor below sys.target.touch for touch; a system whose geometry gives less SHALL still extend the hit area without changing the drawn cell. WHILE density is compact, for a fine pointer the hit area SHALL be the cell and half of the gap above and below it, the one place where a cell of the drawer is lower than the pointer target (still above the 24 of WCAG 2.5.8); WHERE input is touch, or the platform cannot tell the input type, a compact cell SHALL be drawn at least sys.target.touch high, because cells whose hit areas touch cannot extend them over each other. Hover and press over any part of the hit area SHALL answer on the item container.
`NVD-7`	WHILE a destination's or a group's disabled is true THE navigation drawer SHALL render its item container, icon indicator, icon, label, trailing content and opacity from the disabled component tokens of its condition.
`NVD-8`	WHEN a destination or a group's row is pressed by pointer, touch, Enter or Space THE navigation drawer SHALL show its pressed state without delay and SHALL keep it visible for at least sys.motion.duration.press-hold, even when the press ends sooner.
`NVD-9`	WHILE a destination or a group's row is pressed THE navigation drawer SHALL answer as sys.behavior.pressed-feedback names: overlay applies the pressed tokens to the whole item container at once; ripple grows the pressed state layer, clipped to the item container, from the point of contact (from the center for keyboard activation); dim applies the pressed opacity to the whole destination and draws no state layer; none draws no answer to the press. Under ripple and dim only the item container color stays with the state under the press; icon indicator, icon, label, trailing content and opacity still come from the pressed tokens. Under none every part stays with the state under the press. The ripple grows over comp.navigation-drawer.motion.feedback-duration with comp.navigation-drawer.motion.state-easing, fades over comp.navigation-drawer.motion.state-duration with comp.navigation-drawer.motion.state-easing once the press has ended and press-hold has passed, and appears whole where motion is reduced.
`NVD-10`	THE navigation drawer SHALL ease its item container and icon indicator corners and a modal drawer's end corners by sys.shape.corner-smoothing (0 is a quarter circle, 0.6 the iOS continuous corner; a platform with only the OS curve draws it for any amount above 0) and show its keyboard focus as sys.behavior.focus-style names (ring or glow); a platform that cannot draw a choice SHALL fall back to the first value and state that in its README.
`NVD-11`	THE navigation drawer SHALL be comp.navigation-drawer.container.width wide while expanded and comp.navigation-drawer.collapsed.container.width.regular wide while collapsed, beside the start inset, and the full height of its parent, filled with its variant's container color (comp.navigation-drawer.container.color.standard or comp.navigation-drawer.container.color.modal), raised by its variant's elevation (comp.navigation-drawer.container.elevation.standard, comp.navigation-drawer.container.elevation.modal), with its end corners rounded by its variant's shape (comp.navigation-drawer.container.shape.standard, comp.navigation-drawer.container.shape.modal) and square start corners, and edged at its end by comp.navigation-drawer.outline.width of its variant's outline color (comp.navigation-drawer.outline.color.standard, comp.navigation-drawer.outline.color.modal); right-to-left layouts SHALL put it at the right edge, mirrored.
`NVD-12`	THE navigation drawer SHALL lay out, comp.navigation-drawer.container.padding-inline from its start and end and comp.navigation-drawer.container.padding-block from its top and bottom (measured to the first and last cell, not to their hit areas), its header (NVD-38) and then, comp.navigation-drawer.header.gap below it (at the padding WHILE the header is empty), its items in reading order: destinations, groups and sections, a section laying out its divider, its heading and its items in that order, and an open group its row and then its items; it SHALL put comp.navigation-drawer.container.gap.regular between two cells, and WHILE the items are taller than the space below the header it SHALL scroll them and keep the header in place, in both forms.
`NVD-13`	WHILE the drawer is expanded THE navigation drawer SHALL draw each destination as an item container that ends comp.navigation-drawer.container.padding-inline inside the drawer's end edge and starts comp.navigation-drawer.container.padding-inline inside its start edge, further in by the row's indent (NVD-69) WHILE highlight is indented and at that same place at every level WHILE highlight is full (NVD-70), its content starting the row's indent further in either way; comp.navigation-drawer.item.container.height.regular high unless its label's lines need more, with corners comp.navigation-drawer.item.container.shape, holding in reading order: its icon, centered on the icon column's center line (half of comp.navigation-drawer.collapsed.container.width.regular from the drawer's start edge, the row's indent further, and a chevron's room and comp.navigation-drawer.item.gap further WHILE chevron is start) and on the cell's icon line (NVD-31), with its icon indicator centered behind it and taking no space; a group's start chevron before it WHILE chevron is start (NVD-68); its label in comp.navigation-drawer.item.label.typescale.regular, comp.navigation-drawer.item.gap after the icon or the icon's room (NVD-71), or comp.navigation-drawer.item.padding-inline.regular from where the row's content starts WHILE it has neither, on one line unless labelWrap is true (NVD-75), and its supporting text (NVD-74); and its trailing content (NVD-43) at the end, before an end chevron, comp.navigation-drawer.item.gap after the label and comp.navigation-drawer.item.padding-inline.regular from the item container's end. Right-to-left layouts SHALL mirror it.
`NVD-14`	THE navigation drawer SHALL draw each icon at comp.navigation-drawer.item.icon.size.regular with the family and fill of its condition (selected for the selected destination, unselected for every other), sys.icon.weight, and an optical size clamped between sys.icon.optical-size.min and sys.icon.optical-size.max.
`NVD-15`	WHILE a destination has trailing content (its trailingText, or its trailing slot's content) THE navigation drawer SHALL expose it as part of the destination's description, after its name, its state and its badge's description, and not as an element of its own, and SHALL keep drawing it WHILE the destination is disabled.
`NVD-16`	WHILE a section's title is not empty THE navigation drawer SHALL draw it as the section's heading in comp.navigation-drawer.heading.typescale and comp.navigation-drawer.heading.color, in a row at least comp.navigation-drawer.heading.height.regular high with the text vertically centered and starting where the destinations' labels start WHILE they have no icon (comp.navigation-drawer.item.padding-inline.regular inside the drawer's inner edge), and SHALL expose it as a heading that is not focusable; WHILE the drawer is collapsed it SHALL keep the row at its height, draw no text in it and hide it from assistive technology; WHILE the title is empty the section SHALL draw no heading row. THE navigation drawer SHALL set the heading's letter-spacing by the script of its text, as every title is set (PRS-20): no negative letter-spacing WHERE its language is Chinese, Japanese or Korean, and none WHERE its script joins its letters or stacks marks on them.
`NVD-17`	WHILE a section's divider is true THE navigation drawer SHALL draw a divider component before the section, across the drawer's inner width in either form, and leave it as the divider component draws it; IF a section holds a section, or a group holds a section, THE navigation drawer SHALL render the inner section's items in its place, and in debug builds report that sections do not nest and do not go inside a group.
`NVD-18`	WHILE variant is standard THE navigation drawer SHALL take its width in the layout, in its current form (NVD-30), WHILE open is true and no width and no presence to assistive technology or focus WHILE open is false; WHEN open changes it SHALL slide in or out while the content beside it resizes, over comp.navigation-drawer.motion.enter-duration with comp.navigation-drawer.motion.enter-easing when opening and comp.navigation-drawer.motion.exit-duration with comp.navigation-drawer.motion.exit-easing when closing, and at once where motion is reduced. A standard drawer SHALL draw no scrim, SHALL NOT keep focus inside it and SHALL NOT emit close.
`NVD-19`	WHEN open becomes true WHILE variant is modal THE navigation drawer SHALL, WHILE collapsible is false, slide in from its start edge over the content and fade its modal layer's scrim in comp.navigation-drawer.scrim.color and comp.navigation-drawer.scrim.blur in over the rest of the window in step (MDL-1, MDL-7), over comp.navigation-drawer.motion.enter-duration with comp.navigation-drawer.motion.enter-easing (at once where motion is reduced), and WHILE collapsible is true widen from its column as NVD-40 says; in both cases it SHALL move focus to the selected destination (or the group row that shows it, NVD-47) or else to its first focusable element, SHALL keep focus inside the drawer while it is open, and SHALL make everything behind it inert to pointer, touch, keyboard and assistive technology, as its modal layer does (MDL-2, MDL-3, MDL-4).
`NVD-20`	WHEN the user presses the scrim, presses Escape, uses the platform's back action (as its modal layer answers them, MDL-6), activates the menu button (NVD-37), or drags the drawer toward its start edge past half its width or flings it that way, WHILE variant is modal and open is true, THE navigation drawer SHALL close and emit close exactly once; on the web it SHALL set open to false itself, as a dialog does, and a controlled platform SHALL leave open to the caller, who sets it from close. A fling is a release faster than the platform's minimum fling velocity (Android's ViewConfiguration.getScaledMinimumFlingVelocity, Flutter's kMinFlingVelocity) or, where the platform names none (the web, SwiftUI, React Native), 0.5 points per millisecond, and the drawer follows a drag only beyond the platform's touch slop (Android's ViewConfiguration.getScaledTouchSlop, Flutter's kTouchSlop) or, where the platform names none, 8 points, as BSH-9 says for the bottom sheet. A release's velocity is the pointer's over its last moves: WHERE the pointer has not moved for longer than the time after which the platform's velocity tracker takes a pointer as stopped (40 milliseconds in Android's VelocityTracker, Jetpack Compose's VelocityTracker and Flutter's VelocityTracker) or, where the platform names none (the web, SwiftUI, React Native), 40 milliseconds before the release THE navigation drawer SHALL take the release as having no velocity, so that a drag that stops where it is wanted and is let go there is no fling, however fast it moved before it stopped.
`NVD-21`	WHEN the user activates a destination WHILE variant is modal THE navigation drawer SHALL emit change or reselect as NVD-1 says, and then close and emit close as NVD-20 says; an activation of a link that NVD-60 does not count, which opens the link somewhere else, SHALL leave the drawer open.
`NVD-22`	WHEN a modal drawer closes THE navigation drawer SHALL, WHILE collapsible is false, slide out and fade its scrim out over comp.navigation-drawer.motion.exit-duration with comp.navigation-drawer.motion.exit-easing, and WHILE collapsible is true narrow back to its column as NVD-40 says (at once where motion is reduced), and SHALL return focus to the element that had it when the drawer opened, or, WHERE that element is gone, to where the platform puts focus by default, as its modal layer does (MDL-5).
`NVD-23`	THE navigation drawer SHALL expose each destination as one element named by its label in both forms, with its selected state and its position among the items of its level, and its icon hidden: a link WHILE its href is not empty (NVD-59) and a button otherwise. On the web it is an anchor or a button inside a navigation landmark named by the drawer's label, the selected destination carrying aria-current="page"; on Apple platforms, Android, Flutter and React Native a button, or a link, with the selected state. The selected destination is the place the product is showing, in a product of one screen and in a site of many pages alike: THE navigation drawer SHALL have no second state and no second mark for a current page, and SHALL expose exactly one destination, or none, as current. It SHALL expose groups as NVD-46 says. WHILE variant is modal and open is true THE navigation drawer SHALL also be a modal dialog named by the drawer's label (the web's dialog element; the modal trait or pane title elsewhere).
`NVD-24`	WHILE a destination's label is not empty THE navigation drawer SHALL expose it as the destination's accessible name, over a name the product gives the destination on the element (aria-label or aria-labelledby); WHILE a destination's label is empty and the product gives the destination a name of its own on the element — aria-label, or aria-labelledby naming an element — THE navigation drawer SHALL expose that name as its accessible name; WHILE a destination's label is empty and the product gives it none THE navigation drawer SHALL still render it, and in debug builds report that it has no accessible name; WHILE the drawer's label is empty, variant is modal and the product gives the drawer no name of its own on the element — aria-label, or aria-labelledby naming an element — it SHALL report that the dialog has no name.
`NVD-25`	THE navigation drawer SHALL extend its container under the system insets at its start, top and bottom and SHALL place its header, destinations and sections inside them.
`NVD-26`	WHEN variant or density names a value that the active design system does not have THE navigation drawer SHALL render with that axis's default value's tokens, and in debug builds report the unknown value.
`NVD-27`	WHILE the text size is enlarged THE navigation drawer SHALL keep both its widths, grow each cell and section heading with its text in both forms alike (their heights are minimums, NVD-31), keep one-line labels, one-line supporting text and short labels on one line and cut them (NVD-75), and SHALL NOT scale its icons, icon indicators or trailing glyphs; WHERE the platform offers a large-content viewer for bar items (iOS) a long press on a collapsed destination SHALL show its icon and label enlarged.
`NVD-28`	WHEN open changes from false to true WHILE variant is standard THE navigation drawer SHALL move focus to the selected destination or else to its first focusable element, and WHEN open then changes to false while focus is inside it SHALL return focus to the element that had it when the drawer opened, or, WHERE that element is gone, to where the platform puts focus by default; Tab and Shift+Tab SHALL move focus out of an open standard drawer without closing it (a standard drawer is a layout region, not an overlay).
`NVD-29`	IF two destinations have the same value THE navigation drawer SHALL treat the first of them in reading order as the one the drawer's value selects, and in debug builds report the repeated value.
`NVD-30`	WHILE collapsible is false THE navigation drawer SHALL be expanded and ignore expanded; WHILE collapsible is true and variant is standard it SHALL be expanded WHILE expanded is true and collapsed WHILE expanded is false; WHILE collapsible is true and variant is modal it SHALL be collapsed, in the layout, WHILE open is false, and expanded over the content WHILE open is true (NVD-40), ignoring expanded.
`NVD-31`	WHILE collapsible is true THE navigation drawer SHALL give every cell the same height and the same place in both forms, so that each icon, each header button and the main action's glyph is drawn at exactly the same point expanded, collapsed and while moving between them: a cell's icon line SHALL lie below its top by the larger of half the expanded row's height (NVD-13) and comp.navigation-drawer.collapsed.item.container.padding-block.regular plus half of comp.navigation-drawer.item.icon-indicator.height.regular, and the cell SHALL reach below that line by the larger of half the expanded row's height and half of comp.navigation-drawer.item.icon-indicator.height.regular plus, WHILE collapsedLabels is not never, comp.navigation-drawer.collapsed.item.gap and one line of comp.navigation-drawer.collapsed.item.label.typescale, plus comp.navigation-drawer.collapsed.item.container.padding-block.regular; both forms SHALL center the icon on that line. A section heading's row, and the header slot's row, SHALL keep their heights in both forms. The one exception is an open group, whose items the collapsed drawer does not draw (NVD-47): the cells after it move up while the drawer collapses and back while it expands. WHILE collapsible is false a cell SHALL be the expanded row alone.
`NVD-32`	WHILE the drawer is collapsed THE navigation drawer SHALL draw only the cells that are not inside a group (top-level destinations and groups, in a section or not), each as an item container comp.navigation-drawer.collapsed.item.container.width.regular wide, centered in the icon column, with corners comp.navigation-drawer.collapsed.item.container.shape, each at most half its height, holding, comp.navigation-drawer.collapsed.item.container.padding-block.regular below its top, the icon indicator, comp.navigation-drawer.item.icon-indicator.width.regular wide and comp.navigation-drawer.item.icon-indicator.height.regular high with corners comp.navigation-drawer.item.icon-indicator.shape, its icon centered in it on the cell's icon line; and WHILE its short label is drawn (NVD-33), comp.navigation-drawer.collapsed.item.gap below the icon indicator, the short label centered on one line in comp.navigation-drawer.collapsed.item.label.typescale, truncated at its end with an ellipsis inside comp.navigation-drawer.collapsed.item.container.padding-inline, and comp.navigation-drawer.collapsed.item.container.padding-block.regular below it. It SHALL draw no trailing content. Every part is laid out in every system; a transparent color hides a part without changing the layout.
`NVD-33`	WHILE the drawer is collapsed and collapsedLabels is never THE navigation drawer SHALL draw no short label, so that a collapsed cell is its expanded row with the label and trailing content gone; WHILE it is selected it SHALL draw only the short label of the cell drawn selected (the selected destination, or the group that shows it, NVD-47); WHILE it is always it SHALL draw every cell's short label. Every destination's label SHALL remain its accessible name.
`NVD-34`	THE navigation drawer SHALL draw a collapsed cell's shortLabel, or its label WHILE shortLabel is empty, and SHALL keep its label as its accessible name in both forms; IF shortLabel is not empty and is not a part of label (ignoring case) THE navigation drawer SHALL still draw it, and in debug builds report that the visible name is not part of the accessible name.
`NVD-35`	WHEN the drawer changes form (NVD-30) THE navigation drawer SHALL, over comp.navigation-drawer.motion.expand-duration with comp.navigation-drawer.motion.expand-easing: move its end edge between comp.navigation-drawer.collapsed.container.width.regular and comp.navigation-drawer.container.width, a standard drawer's content beside it resizing with it; keep every icon, header button and the main action's glyph in place (NVD-31); change each item container between its two sizes and corners as one shape around the same icon line (WHERE the two forms give it the same height and corners, as the default system does, its end edge alone moves), and cross-fade its color and those of its icon indicator, icon and label from one form's condition to the other's; clip the expanded labels, trailing content, headings' text and the header slot at the moving edge and fade them out over the first half of the change when collapsing, and in over the second half when expanding; and fade the short labels in over the second half when collapsing, and out over the first half when expanding. It SHALL NOT stretch, reshape or recolor a header button on the way (NVD-38). WHERE motion is reduced it SHALL change form at once.
`NVD-36`	WHEN the drawer changes form THE navigation drawer SHALL keep focus where it is, and SHALL take what the collapsed form does not draw (the header slot's content, the headings' text, trailing content, the chevron of a group that is a destination, the items inside groups) out of the focus order and away from assistive technology WHILE it is collapsed; IF focus is on such content when the drawer collapses THE navigation drawer SHALL move it to the menu button (NVD-37), or else to the first focusable element of the drawer. A destination's role, name and state SHALL be the same in both forms.
`NVD-37`	WHILE collapsible is true THE navigation drawer SHALL treat its first header button as its menu button and expose it as expanded or collapsed, controlling the drawer (aria-expanded and aria-controls on the web; the expanded state elsewhere); WHEN the user activates it, after the button's own click, THE navigation drawer SHALL emit expandedChange exactly once with the form asked for (true to expand, false to collapse) WHILE variant is standard or the drawer is not open, and on the web apply it itself (expanded for a standard drawer, open for a modal one); WHILE a modal drawer is open it SHALL close as NVD-20 says instead. WHILE collapsible is true and the drawer has no header button it SHALL report in debug builds that its user cannot change its form.
`NVD-38`	THE navigation drawer SHALL lay out its header from the top: its header buttons stacked in the icon column, each centered on its center line, comp.navigation-drawer.header.item-gap apart, and each drawn as the Button it is in both forms and while the drawer moves between them: the Button's own size, shape (a circle in the default system) and colors, never stretched to a row's width, never given an item container's shape and never filled as an active indicator; WHILE expanded, the header slot's content in the first header button's row, comp.navigation-drawer.item.gap after it (from comp.navigation-drawer.container.padding-inline WHILE there is no header button), vertically centered, the row as tall as the taller of the two, the slot's box giving what it holds comp.navigation-drawer.header.typescale and comp.navigation-drawer.header.color as an inherited text style, so that plain text placed there is drawn in the system's title style and an element that sets its own style keeps it; and then the main action (NVD-39), comp.navigation-drawer.header.item-gap below. A header-button or main-action item SHALL go to the header wherever it stands among the items, and the header's content SHALL come first in reading and focus order and keep its own semantics.
`NVD-39`	WHILE the drawer holds a main-action item THE navigation drawer SHALL draw it as the Main Action Button it is, collapsed to its icon (extended false) WHILE the drawer is collapsed and extended with its label WHILE the drawer is expanded, changing with the drawer over comp.navigation-drawer.motion.expand-duration; it SHALL place the button so that the center of its glyph lies on the icon column's center line, the line the destinations' icons are centered on (NVD-13, NVD-31), in both forms, at every size of the button, in every density and design system and in either layout direction: the icon column's center line lying a chevron's room and comp.navigation-drawer.item.gap further from the start WHILE chevron is start (NVD-68): WHILE the drawer is collapsed the button's start SHALL lie half the column's width less half the button's height (the side of its collapsed square, comp.main-action-button.container.height.medium for medium, and so on) from the drawer's start edge, and WHILE it is expanded half the column's width less the button's padding before a leading glyph and half that glyph (comp.main-action-button.container.padding-inline-start-with-icon.medium and comp.main-action-button.icon.size.medium for medium, and so on), each read from the button's own tokens for its size and never measured or written as a number; WHEN the drawer changes form the button's start SHALL move between the two over comp.main-action-button.motion.resize-duration with comp.main-action-button.motion.resize-easing, the motion with which the button moves its glyph between the middle and its side (MAB-14), at once where motion is reduced. A button whose collapsed square is wider than the icon column (a large one in the default system's columns) SHALL still be placed so, reaching past the column's start edge, and in debug builds THE navigation drawer SHALL report it; a button whose glyph is trailing SHALL be placed so while collapsed and, while expanded, start where it starts collapsed, and in debug builds THE navigation drawer SHALL report that its glyph leaves the column while expanded. Its label SHALL remain its accessible name in both forms. IF the drawer holds more than one main-action item THE navigation drawer SHALL draw the first, and in debug builds report the rest.
`NVD-40`	WHILE variant is modal and collapsible is true THE navigation drawer SHALL take its column's width in the layout and draw the column as a standard drawer's (comp.navigation-drawer.container.color.standard, comp.navigation-drawer.container.elevation.standard, comp.navigation-drawer.outline.color.standard) WHILE open is false; WHEN open becomes true it SHALL widen over the content, without resizing it, from the column to comp.navigation-drawer.container.width in the modal variant's container, elevation, shape and outline, and fade its modal layer's scrim in comp.navigation-drawer.scrim.color and comp.navigation-drawer.scrim.blur in over the rest of the window (MDL-1), both over comp.navigation-drawer.motion.expand-duration with comp.navigation-drawer.motion.expand-easing, changing its parts as NVD-35 says; WHEN it closes it SHALL narrow back to the column and fade the scrim out over the same time; WHERE motion is reduced it SHALL do both at once. While it widens and while it narrows its container color, elevation, end corners and outline SHALL change between the column's and the modal variant's over the same motion, in step with its width, so that no frame changes its look at once: its first frame opening is drawn as the column at rest, and its last frame closing as the column at rest, which then stays where it is. WHEN it first appears with open true it SHALL draw itself open in its first frame, at comp.navigation-drawer.container.width over its full scrim, without widening from a column it never showed. NVD-19 to NVD-22 apply to it while it is open.
`NVD-41`	WHEN the selected destination changes THE navigation drawer SHALL change the new destination's item container to its selected color and the previous one's to its unselected color in place, each at its full size and shape throughout, and change icon, label and trailing content colors and icon fill, over comp.navigation-drawer.motion.state-duration with comp.navigation-drawer.motion.state-easing, in either form; it SHALL NOT grow, shrink, slide or otherwise resize an item container to show a selection. THE icon indicator, which the default system leaves transparent, SHALL grow in width from its center to its full width, at its full height throughout, on the new destination and fade out on the previous one, over comp.navigation-drawer.motion.selection-duration with comp.navigation-drawer.motion.selection-easing; WHILE the drawer is collapsed and collapsedLabels is selected the short labels SHALL appear and disappear over the same time without moving any cell (NVD-31); WHERE motion is reduced it SHALL show the new selection at once.
`NVD-42`	WHILE a destination's badge is true THE navigation drawer SHALL draw a Tanrei badge anchored to its icon in both forms, above the icon indicator, as the badge component draws one whose count is the destination's badgeCount and whose label is its badgeLabel, SHALL keep it while the destination is disabled, and SHALL expose the badge's description (badgeLabel, or the displayed count when it is empty) as part of the destination's own description, after its name and state.
`NVD-43`	WHILE a destination's trailing slot holds content THE navigation drawer SHALL draw it at the end of the expanded row: a glyph at comp.navigation-drawer.item.trailing-icon.size.regular in its condition's trailing icon color (comp.navigation-drawer.unselected.item.trailing-icon.color, comp.navigation-drawer.selected.item.trailing-icon.color), anything else as it draws itself; WHILE the slot is empty and trailingText is not empty it SHALL draw trailingText there, on one line and never truncated, in comp.navigation-drawer.item.trailing-text.typescale and its condition's trailing text color (comp.navigation-drawer.unselected.item.trailing-text.color, comp.navigation-drawer.selected.item.trailing-text.color); IF both are given it SHALL draw the slot's content and in debug builds report trailingText. IF the slot holds a focusable element THE navigation drawer SHALL keep it out of the focus order, and in debug builds report that trailing content is not interactive.
`NVD-44`	THE navigation drawer SHALL draw a group's row as a destination's in either form (NVD-13, NVD-32), with its icon, label and short label, its trailing content (NVD-43, a group's trailing slot and trailingText as a destination's), and its chevron where chevron puts it (NVD-68): the icon set's expand_more at comp.navigation-drawer.item.trailing-icon.size.regular in its condition's trailing icon color, turned half a turn WHILE the group is open; WHILE the group is open and the drawer expanded it SHALL draw the group's items below its row, each one's row starting one step of indent further in (NVD-69, NVD-70); WHEN open changes it SHALL reveal or hide those items, moving the cells below, and turn the chevron, over comp.navigation-drawer.motion.disclosure-duration with comp.navigation-drawer.motion.disclosure-easing, at once where motion is reduced. A group's row SHALL answer hover, focus and press, show its focus ring, and follow press-hold, pressed-feedback, corner smoothing and focus style exactly as a destination does (NVD-4 to NVD-10), from the unselected condition unless NVD-47 says otherwise.
`NVD-45`	WHEN the user activates, WHILE expandable is true and the drawer is expanded, a group's row by pointer, touch, Enter or Space and the group is not a destination (NVD-66), or activates the chevron of a group that is one (NVD-67), or the icon of a group while chevron is none (NVD-68), THE navigation drawer SHALL emit the group's toggle exactly once with its new open state, SHALL NOT emit change, reselect or close, and on the web SHALL set the group's open itself (a controlled platform leaves it to the caller); WHEN focus is on a closed group's row and the user presses the arrow key toward the end of the line (Right in a left-to-right layout) it SHALL open the group, and on an open group's row the arrow key toward the start SHALL close it; WHEN focus is on an item inside an open group and the user presses the arrow key toward the start, it SHALL move focus to that group's row. WHILE a group's disabled is true THE navigation drawer SHALL NOT emit toggle, change or reselect for it, SHALL NOT make its row or its chevron focusable and SHALL expose it as disabled.
`NVD-46`	THE navigation drawer SHALL expose a group's row as one button named by its label, with its expanded or collapsed state and its icon and chevron hidden, controlling its items, and its items as a list named by the group's label inside the drawer's list: on the web a button with aria-expanded and aria-controls and a nested list labelled by it; on Apple platforms a button whose value is expanded or collapsed, as a disclosure group reads; on Android the expanded state with the expand and collapse actions; in Flutter the expanded semantics flag; in React Native accessibilityState.expanded. WHILE a group is a destination (NVD-66) THE navigation drawer SHALL instead expose its row as that destination, as NVD-23 says (a link while it has an href and a button otherwise, named by its label, with its selected state), and its chevron as one more button, named by the group's label, with the group's expanded or collapsed state and controlling its items, which stay a list named by the group's label: on the web the row is the link or button with aria-current and the chevron a button with aria-expanded and aria-controls, each its own Tab stop, as the disclosure navigation menu with top-level links of the WAI-ARIA Authoring Practices is; on the other platforms the row carries the selected state and the chevron the expanded state with the expand and collapse actions. WHILE expandable is false, NVD-72 says instead what a group's row is. WHILE a group is closed, or the drawer collapsed, its items SHALL be neither exposed nor focusable. WHILE a group's label is not empty THE navigation drawer SHALL expose it as its row's accessible name, over a name the product gives the group on the element (aria-label or aria-labelledby); WHILE a group's label is empty and the product gives the group a name of its own on the element — aria-label, or aria-labelledby naming an element — THE navigation drawer SHALL expose that name as its row's accessible name; WHILE a group's label is empty and the product gives it none THE navigation drawer SHALL still render it, and in debug builds report that it has no accessible name.
`NVD-47`	WHILE the selected destination is inside a closed group, or inside a group WHILE the drawer is collapsed, THE navigation drawer SHALL draw the row that shows it (the outermost closed group that holds it; collapsed, its top-level group) from its form's selected condition; WHILE the drawer is collapsed it SHALL draw each top-level group as one cell and none of its items; WHEN the user activates the cell of a group that is not a destination (NVD-66) WHILE the drawer is collapsed THE navigation drawer SHALL emit expandedChange with true, and the group's toggle with true WHILE it is closed, SHALL on the web apply both itself, and SHALL move focus to the group's row once the drawer is expanded.
`NVD-48`	IF groups nest more than three levels deep THE navigation drawer SHALL still render them, indenting each level's content by comp.navigation-drawer.item.nest-indent.regular, and in debug builds report the depth.
`NVD-49`	WHILE the drawer is collapsed and a top-level destination or group has no icon THE navigation drawer SHALL still draw its cell, with an empty icon indicator and, WHERE NVD-33 draws one, its short label, and in debug builds report that a collapsible drawer needs an icon on every top-level destination and group.
`NVD-50`	THE navigation drawer SHALL take its layout direction from where it is used — the direction of the nearest ancestor that sets one, and the platform's own where none does — and SHALL have no direction setting of its own; WHEN that direction changes while the navigation drawer is shown THE navigation drawer SHALL draw itself for the new direction at once, without a motion of its own, keeping its expanded or collapsed form, its open state, the selected destination and its focus.
`NVD-51`	WHERE the layout direction is right-to-left THE navigation drawer SHALL draw a destination's and a group's icon mirrored left to right exactly when the system's icon set marks that glyph's name as mirrored or the product forces mirroring for that use, and unmirrored when the product forbids it: the icon helper mirrors the glyph inside its own box, about the box's vertical centre line, changing neither its place, size, color and fill nor the order NVD-13 gives. THE navigation drawer SHALL NOT mirror a glyph itself, and SHALL NOT mirror content the product gives as an image or a view of its own rather than by a glyph's name. A group's chevron (expand_more, NVD-44) is not marked and is never mirrored; the product's own content in a trailing slot is the product's to mirror, and a header button's and the main action's glyphs are mirrored by those components (BTN-19, MAB-22).
`NVD-52`	THE navigation drawer SHALL lay out a destination's and a group's label and short label, a section's heading, a destination's trailing text and the header's text as text of its own direction, isolated from the text around it: each takes the base direction of its first strong character, or the layout direction where it has none, so that a left-to-right word, a number with its sign or unit, a telephone number and an address keep their own order in a right-to-left layout and reorder nothing beside them; THE navigation drawer SHALL still place each and align its lines by the layout direction, not by the text's own, and SHALL cut a short label that does not fit (NVD-32) at the end of its own direction, so that a left-to-right label in a right-to-left layout loses its right end and never its beginning.
`NVD-53`	WHILE responsive is true THE navigation drawer SHALL choose its presentation from the width of the window it is in, and SHALL ignore variant: WHILE the window is at least comp.navigation-drawer.breakpoint.expanded wide it SHALL be a standard drawer that is shown whatever open says (the standard presentation: NVD-18's place in the layout, in the form NVD-30 gives a standard drawer); WHILE the window is narrower than that, at least comp.navigation-drawer.breakpoint.collapsed wide, and collapsible is true, it SHALL be a collapsible modal drawer (the column presentation: its column in the layout, widening over the content WHILE open is true, NVD-40); and otherwise it SHALL be a modal drawer that is not collapsible (the modal presentation: nothing in the layout, shown over the content WHILE open is true, NVD-19 to NVD-22). In each presentation THE navigation drawer SHALL draw and behave exactly as the drawer whose variant and collapsible it stands for, from that variant's tokens. WHILE responsive is false THE navigation drawer SHALL NOT read the window's width.
`NVD-54`	WHEN the window's width takes a responsive drawer from one presentation to another THE navigation drawer SHALL draw the new presentation at once, without the motions of NVD-18, NVD-35 and NVD-40; SHALL enter it closed — WHERE open is true it SHALL emit close exactly once, the web setting open to false itself and a controlled platform leaving it to the caller (NVD-20); SHALL keep expanded, which only the user's request (NVD-37) and the product change, so that the standard presentation returns in the form it was left in; SHALL keep value and every group's open; and SHALL emit presentationChange exactly once with the new presentation (standard, column or modal). It SHALL also emit presentationChange exactly once WHEN the presentation is first decided. IF keyboard focus is on something the new presentation does not show THE navigation drawer SHALL move it to the menu button (NVD-37), or else to the first focusable element it still shows, and WHERE it shows nothing SHALL leave focus to the platform; focus that an open modal presentation kept inside the drawer SHALL be free to leave once the drawer is standard.
`NVD-55`	THE navigation drawer SHALL hold three things apart WHILE responsive is true: the presentation, which it derives from the window's width alone, never stores, never writes into variant, open or expanded, and exposes read-only; open, which is transient, false unless the product or the menu button has just asked, and false again after every change of presentation and every close (NVD-20, NVD-21); and expanded, the user's choice of form for the standard presentation, which THE navigation drawer SHALL NOT persist beyond its own lifetime — a product that wants the choice remembered stores what expandedChange carries and sets expanded from it. WHEN a responsive drawer first appears THE navigation drawer SHALL draw the presentation of the current width in its first frame, without motion and without emitting close; WHERE it is rendered before the width is known (a page rendered on a server) it SHALL render no modal presentation open, SHALL make nothing inert, and SHALL decide both only once the width is known.
`NVD-56`	WHILE the drawer is collapsed and a cell draws no short label (NVD-33), and WHILE it is expanded and a row's label or supporting text is cut (NVD-75), THE navigation drawer SHALL show that cell's label (and, where its supporting text is cut, its supporting text after it), WHEN the cell is hovered with a fine pointer or receives keyboard focus, as the platform shows the name of a control that is an icon alone (a plain tooltip beside the cell, toward the content, on the web and on desktop; nothing more than the large-content viewer of NVD-27 on a touch platform), and SHALL NOT add it to the cell's accessible name or description, which already hold it.
`NVD-57`	WHEN the navigation drawer first appears in the layout with a selected destination, and WHEN value changes while it is shown, THE navigation drawer SHALL bring the row that shows the selection (the selected destination, or the group's row NVD-47 names) into view: IF that row is not wholly inside the space its items scroll in THE navigation drawer SHALL scroll them so that the row is centered in that space, as far as the scroll range allows, and otherwise it SHALL NOT scroll at all, so that a drawer whose selection is already in view stays where it is from one page to the next. It SHALL do so at once, without motion, WHEN the drawer first appears in its first frame (in the order NVD-62 gives), and SHALL NOT move keyboard focus. A modal presentation is brought there WHEN it opens, by the focus NVD-19 gives.
`NVD-58`	WHILE revealSelected is true THE navigation drawer SHALL, WHEN it first appears with a selected destination and WHEN value changes to a destination, draw every closed group that holds that destination open — and, WHERE the selected destination is a group (NVD-66), that group as well, so that a site's sidebar shows the pages of the section whose page is shown — whatever its open said (a state the product gave back included, NVD-62), and SHALL emit each such group's toggle exactly once with true, the web setting the group's open itself and a controlled platform leaving its open to the caller, as NVD-45 says; WHEN the drawer first appears it SHALL draw them open in its first frame, without the motion of NVD-44, and afterwards with it. It SHALL NOT emit change, reselect or close for it, and SHALL NOT open again a group the user closes afterwards until value changes: that group's row then shows the selection (NVD-47). WHILE the drawer is collapsed it SHALL open them all the same, for the form in which they are drawn. WHILE revealSelected is false THE navigation drawer SHALL leave every group as its open says.
`NVD-59`	WHILE a destination's href is not empty THE navigation drawer SHALL make it a link to that address and not a button. On the web it SHALL be an anchor element with that address, whose behaviours are the browser's own — following it on a plain click, a touch or Enter; opening it in another tab or window by a modified click or a middle click; the link's context menu; dragging it; copying its address; showing its address on hover — and THE navigation drawer SHALL NOT prevent, replace or imitate any of them; Space SHALL NOT activate a link. On other platforms it SHALL be the platform's own link (SwiftUI's Link; on Compose, Flutter and React Native an element with the platform's link semantics whose address is opened by the platform's opener), as BTN-22 says for a link button. THE navigation drawer SHALL draw a link exactly as it draws a button destination, from the same tokens in every state and both forms (NVD-3, NVD-4, NVD-7 to NVD-9, NVD-13, NVD-32), SHALL draw no look of its own for a link the user has visited, and SHALL give its hit area (NVD-6) to the link. WHILE a link's value is empty THE navigation drawer SHALL take its href as its value, for value, change, reselect and NVD-29. WHILE a link's disabled is true it SHALL keep the link role with the disabled state and no destination, and SHALL open nothing by any means the platform gives a link (NVD-2; on the web the anchor carries no address).
`NVD-60`	WHEN the user activates a link destination THE navigation drawer SHALL count it as an activation (NVD-1, NVD-21) only WHILE it follows the link in the place where the product is shown: a click with the primary button and no modifier key, a touch, Enter, or the default action of assistive technology, on a link whose target is same and that asks for no download. It SHALL then emit change or reselect exactly once, carrying the destination's value and its href, before the link is followed, and SHALL NOT hold the link back for sys.motion.duration.press-hold; SHALL NOT write value itself on any platform, because where the product is, is the product's to say, and the page or the route shown next sets value; and SHALL let the link be followed unless the product cancels the event (preventDefault on the web), as a product does that moves between its pages without loading a document. For every other activation of a link — a modified or a middle click, a link whose target is new, a download — THE navigation drawer SHALL emit neither change nor reselect, SHALL NOT close, and SHALL keep value and the drawn selection as they are.
`NVD-61`	THE navigation drawer SHALL hold how far its items are scrolled from their start as scrollOffset, in the units of its layout: it SHALL give the present distance whenever the product reads it, and WHEN the product sets it, before the drawer first appears included, SHALL scroll there at once and without motion, held inside the scroll range, the header staying in place (NVD-12). Scrolling by the user SHALL emit no event. WHILE the items can scroll, a scroll that reaches either end of them SHALL NOT go on to scroll what is beside or behind the drawer. WHEN a group opens or closes (NVD-44) THE navigation drawer SHALL keep that group's row where it is in view and move only the cells after it; WHEN keyboard focus moves to a cell that is not wholly in view it SHALL scroll that cell into view by the least distance that shows it whole.
`NVD-62`	THE navigation drawer SHALL treat scrollOffset and every group's open as the state of one view, as NVD-55 treats expanded: it SHALL keep neither beyond its own lifetime and SHALL write neither to any storage. A product whose pages are separate documents keeps what each group's toggle carries, and what scrollOffset reads when a page is left, and gives them back as the groups' open and the drawer's scrollOffset when the next page is rendered. WHEN the drawer first appears THE navigation drawer SHALL build its first frame in this order — every group as its open says; then the groups NVD-58 opens; then the items at scrollOffset; then the selection brought into view (NVD-57) — and SHALL draw it without the motions of NVD-41 and NVD-44 and without emitting change, reselect or close.
`NVD-63`	WHILE a destination is a link and its target is new THE navigation drawer SHALL open its href in a new context, as BTN-24 says for a link button (on the web a new tab or window that is given no handle to the page that opened it), and, WHILE the drawer is expanded and the destination has neither trailing slot content nor trailingText, SHALL draw the glyph open_in_new of the system's icon set as its trailing content, as NVD-43 draws a glyph: at comp.navigation-drawer.item.trailing-icon.size.regular, in its condition's trailing icon color (comp.navigation-drawer.unselected.item.trailing-icon.color, comp.navigation-drawer.selected.item.trailing-icon.color), through the icon helper, which mirrors it in a right-to-left layout because the icon set marks its name, and hidden from assistive technology; WHILE the product has put trailing content there THE navigation drawer SHALL draw no mark of its own. Whether a mark is drawn or not, and in both forms, it SHALL expose targetLabel as part of the destination's description, after its badge's description and its trailing content (NVD-15), and WHILE targetLabel is empty SHALL still render and in debug builds report that a link that opens a new context does not say so. WHILE target is same THE navigation drawer SHALL draw no mark and SHALL ignore targetLabel.
`NVD-64`	WHEN a destination's target names a value the navigation drawer does not define THE navigation drawer SHALL treat it as same, and in debug builds report the unknown value. IF a destination's href is only white space, or names a script to run rather than a place to go (the web's javascript: scheme), or cannot be read as an address by the platform, THE navigation drawer SHALL make the destination a button without a destination, and in the last two cases report it in debug builds, as BTN-26 says for a button. WHILE a destination's href is empty THE navigation drawer SHALL ignore its target and targetLabel.
`NVD-65`	THE navigation drawer SHALL draw its cells, its section headings, the gaps between its cells, its nesting indent and its collapsed column from the tokens of its density: WHILE density is regular from comp.navigation-drawer.container.gap.regular, comp.navigation-drawer.item.container.height.regular, comp.navigation-drawer.item.padding-inline.regular, comp.navigation-drawer.item.padding-block.regular, comp.navigation-drawer.item.nest-indent.regular, comp.navigation-drawer.item.icon.size.regular, comp.navigation-drawer.item.icon-indicator.width.regular, comp.navigation-drawer.item.icon-indicator.height.regular, comp.navigation-drawer.item.label.typescale.regular, comp.navigation-drawer.item.trailing-icon.size.regular, comp.navigation-drawer.collapsed.container.width.regular, comp.navigation-drawer.collapsed.item.container.width.regular, comp.navigation-drawer.collapsed.item.container.padding-block.regular and comp.navigation-drawer.heading.height.regular, and WHILE density is compact from comp.navigation-drawer.container.gap.compact, comp.navigation-drawer.item.container.height.compact, comp.navigation-drawer.item.padding-inline.compact, comp.navigation-drawer.item.padding-block.compact, comp.navigation-drawer.item.nest-indent.compact, comp.navigation-drawer.item.icon.size.compact, comp.navigation-drawer.item.icon-indicator.width.compact, comp.navigation-drawer.item.icon-indicator.height.compact, comp.navigation-drawer.item.label.typescale.compact, comp.navigation-drawer.item.trailing-icon.size.compact, comp.navigation-drawer.collapsed.container.width.compact, comp.navigation-drawer.collapsed.item.container.width.compact, comp.navigation-drawer.collapsed.item.container.padding-block.compact and comp.navigation-drawer.heading.height.compact. No density SHALL change comp.navigation-drawer.item.gap, the room between the icon (or its room), the label and the trailing content, as no density changes the tree view's. Wherever another behaviour names one of these tokens by its regular value, THE navigation drawer SHALL read the value of its density instead, in both forms and while moving between them, so that every icon keeps one point in both forms (NVD-31) in each density and a nested destination's icon stands where its group's label starts in each. WHEN density changes while the drawer is shown THE navigation drawer SHALL draw the new density at once, without the motions of NVD-35, NVD-41 and NVD-44, keeping its form, its selection, every group's open, its scroll offset where the range allows, and focus, and SHALL emit nothing for it.
`NVD-66`	WHILE selectableGroups is true THE navigation drawer SHALL treat each group whose value or href is not empty as a destination as well as a group: the drawer's value SHALL select it as it selects a destination, its href standing as its value while its value is empty (NVD-59), and NVD-29 SHALL count it among the destinations in reading order, before the items it holds; its row SHALL be drawn from the selected parts in its form while it is selected (NVD-3, NVD-41) and from the parts NVD-47 names while it is not and a destination it holds is shown by it; its activation SHALL emit change or reselect as NVD-1 says and close a modal drawer as NVD-21 says; and WHILE its href is not empty its row SHALL be a link as NVD-59, NVD-60 and NVD-64 say, opened where the person is. WHILE selectableGroups is false, and for a group whose value and href are both empty, THE navigation drawer SHALL ignore the group's value and href, the group SHALL only open and close (NVD-45), and in debug builds it SHALL report once a group that has a value or an href while selectableGroups is false. WHEN selectableGroups changes while the drawer is shown THE navigation drawer SHALL draw the new form of each group at once, keeping value, every group's open and focus where the element that had it is still drawn, and SHALL emit nothing for it.
`NVD-67`	WHILE a group is a destination (NVD-66) and the drawer is expanded THE navigation drawer SHALL split its row in two: its chevron SHALL be a control of its own, which opens and closes the group as NVD-45 says and SHALL NOT change the selection, and the rest of the row SHALL be the destination, which a press, Enter or Space (Enter alone for a link) activates as NVD-1 says and which SHALL NOT open or close the group: the chevron opens and the row chooses, and one press never does both. The chevron's hit area SHALL be the part of the cell's hit area from the middle of the gap before the chevron's box to the cell's end edge, at least sys.target.pointer wide for a fine pointer and sys.target.touch wide for touch, reaching over the end of the label where the row gives less; the rest of the cell's hit area SHALL be the row's. A hover anywhere on the cell SHALL show on the item container, a press on the chevron SHALL show the pressed state on the item container as a press on the row does (NVD-8, NVD-9), and keyboard focus on the chevron SHALL show the focus ring around the chevron's own box, at the corners of the item container, and not around the row. With focus on the row the arrow keys SHALL open, close and leave the group as NVD-45 says. WHILE the drawer is collapsed the group's cell SHALL be the destination alone: its activation SHALL emit change or reselect, and SHALL NOT expand the drawer or open the group; its items are reached by expanding the drawer.
`NVD-68`	THE navigation drawer SHALL draw a group's chevron where chevron says, as the tree view does. WHILE chevron is start THE navigation drawer SHALL keep a box of comp.navigation-drawer.item.trailing-icon.size.regular at the start of every expanded row's content, comp.navigation-drawer.item.gap before its icon, the icon's room or its label, draw the chevron in it on a group's row and nothing on a destination's, so that the icons and labels of a level each stand in one column, and turn it a quarter turn from pointing toward the end of the line WHILE the group is closed to pointing down WHILE it is open. WHILE chevron is end it SHALL draw expand_more at the very end of the row, after its trailing content, turned half a turn WHILE open. WHILE chevron is none it SHALL draw no chevron and keep no room for one: the arrow keys SHALL still open and close a group (NVD-45); a press on a group's icon SHALL open and close it and choose nothing; WHILE the group is open its icon SHALL be drawn as its openIcon where it has one; a group without an icon SHALL open and close by a press anywhere on its row, unless it is a destination (NVD-66), whose row then chooses it and which the pointer cannot open or close. WHILE the drawer is collapsible THE navigation drawer SHALL draw start as end, so that every icon keeps one point in both forms (NVD-31). WHEN chevron names a value it does not define it SHALL draw start, and in debug builds report the value.
`NVD-69`	THE navigation drawer SHALL begin each row's content, and WHILE highlight is indented its item container, one step of indent further from the start than its group's row for each group that holds it, as the tree view does. WHILE indent is null (auto) a step SHALL be what the group's row draws before its label — its start chevron's room and comp.navigation-drawer.item.gap WHILE chevron is start, and its icon (or the icon's room, NVD-71) and comp.navigation-drawer.item.gap — so that a row's first part (its start chevron, its icon or its label) lines up with where its group's label begins, and comp.navigation-drawer.item.nest-indent.regular WHERE the group's row draws neither. WHILE indent is a number a step SHALL be that many units of the layout, and 0 SHALL begin every row where its group's row begins. WHILE the steps of a row's levels would begin its label past half of the drawer's width THE navigation drawer SHALL begin the row so that its label begins there, as the tree view does, so that a deep row keeps room for its name, at 200 % text too. A step SHALL NOT change a row's height, its hit area (NVD-6), which stays the drawer's width, or the collapsed form, which draws no nested row (NVD-32). WHEN indent is negative or not a number THE navigation drawer SHALL draw auto, and in debug builds report the value.
`NVD-70`	WHILE highlight is indented THE navigation drawer SHALL draw a nested row's item container — its selected fill, its hover and press layers and its focus indicator — from where the row begins (NVD-69) to the drawer's padding at its end, and WHILE highlight is full from the drawer's padding at its start to its padding at its end at every level, the content starting where the row begins either way; WHEN highlight names a value it does not define it SHALL draw indented, and in debug builds report the value.
`NVD-71`	WHILE iconSpace is auto THE navigation drawer SHALL keep an icon's room, empty, on a row without an icon WHERE another row of its level (the same group's rows, or the drawer's top-level rows) has an icon, so that the labels of the level start on one line; WHILE it is always on every row without an icon; and WHILE it is never on none, the label then starting comp.navigation-drawer.item.padding-inline.regular from where the row's content starts. The room is the icon's box and and counts toward the next level's step (NVD-69).
`NVD-72`	WHILE expandable is false THE navigation drawer SHALL draw every group open whatever its open says, draw no chevron and keep no room for one, emit no toggle, and SHALL expose no group as expandable: a group that is a destination (NVD-66) SHALL be that destination alone, and every other group's row SHALL be drawn, take no focus, answer no pointer and be hidden from assistive technology, its label naming the list of its items, which stays a list inside the drawer's list. WHILE the drawer is collapsed it SHALL still draw each top-level group as one cell, whose activation expands the drawer (NVD-47).
`NVD-73`	WHILE guides is shown THE navigation drawer SHALL draw, for each open group that shows at least one row under it while the drawer is expanded, one line comp.navigation-drawer.guide.width wide in comp.navigation-drawer.guide.color from the lower edge of the group's row to the lower edge of the last row shown under it, centred under the group's first part — its start chevron, else its icon or the icon's room, else at the start of its label — as the tree view does; WHILE guides is hover it SHALL draw the same lines only while the pointer is over the drawer or focus is in it, fading them in and out over comp.navigation-drawer.motion.state-duration with comp.navigation-drawer.motion.state-easing (at once where motion is reduced); WHILE guides is none it SHALL draw none. The lines SHALL take no space, keep their color and full opacity in every state of the rows beside them, be hidden from assistive technology, and continue under a pinned group row (NVD-77); WHILE indent is 0 no line SHALL be drawn. In forced colors they SHALL be drawn in the system's line color.
`NVD-74`	WHILE a destination's or a group's supportingText is not empty THE navigation drawer SHALL draw it in comp.navigation-drawer.item.supporting-text.typescale and its condition's supporting-text color (comp.navigation-drawer.unselected.item.supporting-text.color, comp.navigation-drawer.selected.item.supporting-text.color): WHILE supportingPosition is below on a line of its own under the label, the row growing to hold it with comp.navigation-drawer.item.padding-block.regular above and below its text, and WHILE it is inline after the label on its line, comp.navigation-drawer.item.gap after it; it SHALL be one line unless supportingWrap is true (NVD-75), SHALL be read as the row's description after its name and state, and SHALL NOT be drawn while the drawer is collapsed.
`NVD-75`	WHILE labelWrap is false THE navigation drawer SHALL draw each row's label on one line, cut with an ellipsis at the end of its own direction where it does not fit, and WHILE supportingWrap is false the same for its supporting text, below or inline; WHILE either is true that text SHALL wrap and the row grow with it. THE row's accessible name SHALL be its full label, and its description its full supporting text, whatever is drawn. WHEN a row whose label or supporting text is cut is hovered with a fine pointer, after the tooltip's show delay, or receives keyboard focus, THE navigation drawer SHALL show the full text in a plain tooltip beside the row, toward the content (NVD-56), which Escape dismisses, which stays while the pointer is over the row or focus is on it, and which SHALL NOT be shown for a row whose text is drawn whole.
`NVD-76`	WHILE an open group's loading is true THE navigation drawer SHALL draw one loading row under it, after the rows of any items it already holds, one step of indent further in (NVD-69): a Loading indicator component of the small size in the place of a row's icon, and after it loadingLabel in comp.navigation-drawer.item.supporting-text.typescale and comp.navigation-drawer.unselected.item.supporting-text.color, in a row of comp.navigation-drawer.item.container.height.regular. It is not a destination: it SHALL take no focus and answer no pointer, SHALL be counted among no items, and SHALL be named by loadingLabel; THE navigation drawer SHALL expose the list of the group's items as busy WHILE loading is true, and announce nothing itself. WHILE loadingLabel is empty it SHALL draw the indicator alone and in debug builds report that the loading row has no name.
`NVD-77`	WHILE stickyParents is true and the drawer is expanded THE navigation drawer SHALL keep pinned at the top of the space its items scroll in the rows of the open groups that hold the first row shown below the pinned rows, at most stickyMax of them, the innermost winning as VS Code keeps its innermost scopes, one per level and each directly under the one above: each pinned row SHALL be the row itself (no copy is drawn or exposed), keep its own fill, state and focus ring, stay interactive as its row is, be drawn over the rows scrolling under it on comp.navigation-drawer.sticky.container.color (a modal drawer's on its own container color), and leave as its group's last row scrolls past, as the platform's sticky position does; the last pinned row SHALL draw an edge comp.navigation-drawer.sticky.divider.width wide in comp.navigation-drawer.sticky.divider.color at its lower side. WHEN keyboard focus moves to a row hidden under the pinned rows THE navigation drawer SHALL scroll it into view below them (NVD-61's least distance, measured from their lower edge), and bring the selection into view below them (NVD-57). Nothing is animated beyond the scroll itself. WHILE the drawer is collapsed, or stickyParents is false, no row SHALL be pinned. WHEN stickyMax is not a positive whole number it SHALL pin 2, and in debug builds report the value.
`NVD-78`	WHERE the platform has ARIA attributes (the web), WHEN the product sets an aria- attribute on the drawer's own host, by the attribute or by the ARIA property that reflects it, THE navigation drawer SHALL move it to the data-aria- attribute of the same name, so that the host is no second node with its name, description or state, and SHALL expose it on the element that carries the drawer's role — its dialog WHILE it is shown as a modal dialog (NVD-23), its navigation landmark otherwise — an id reference by the elements it names in the host's tree or a tree around it, a description after its own; WHILE label is not empty, label is the drawer's name, over a name given so; WHILE label is empty, a name given so is the drawer's name. WHEN the product sets an aria- attribute on an item's host — a destination's or a group's — THE navigation drawer SHALL move it to the data-aria- attribute of the same name, so that the host is no second node with its name, description or state, and SHALL expose it on the element that carries the row's role (its link or its button), in both forms of the drawer — an id reference by the elements it names in the host's tree or a tree around it, an error message as part of the description while the item is invalid — except those an item owns (aria-current, aria-disabled, and for a group aria-expanded and aria-controls), which it SHALL move and not expose. WHEN the product removes the aria- attribute or its data-aria- twin, or sets the ARIA property that reflects it (ariaLabel, ariaDescribedByElements…) to null, THE navigation drawer SHALL take it off that element. WHEN the product sets an aria- attribute an item owns THE navigation drawer SHALL report it in debug builds.
`NVD-79`	WHILE filterable is true and the drawer is expanded THE navigation drawer SHALL draw a filter field after its header (NVD-38: its header buttons, its header slot and its main action) and comp.navigation-drawer.header.gap below it (at the padding WHILE the header is empty), across the drawer's width inside comp.navigation-drawer.container.padding-inline, and SHALL lay out what stands under the field — the status line of NVD-90 while there is one, then the items — comp.navigation-drawer.filter.gap below it; the field SHALL stay in place while the items scroll, as the header does (NVD-12). The field SHALL be a Text input component of type search in its default variant, of the medium size WHILE density is regular and the small size WHILE density is compact, showing the glyph search of the system's icon set in its leading-icon slot, filterPlaceholder as its placeholder and filterValue as its value, drawn and answering as that text input draws and answers (its own sentences hold, its tokens are its own). WHILE the drawer is collapsed it SHALL draw no field, SHALL keep filterValue, and SHALL draw its cells as though no filter were applied; WHEN it is expanded again the filter SHALL apply again.
`NVD-80`	WHEN the person changes the filter field's text — by typing, deleting, pasting, cutting, dictating, an input method committing text, the clear button (NVD-89) or Escape (NVD-86) — THE navigation drawer SHALL emit filterChange exactly once per change with the new text, setting filterValue itself first on the web (a controlled platform leaves filterValue to the caller), and SHALL apply the filter to the new text at once. WHEN the product sets filterValue THE navigation drawer SHALL show that text in the field and apply it, and SHALL NOT emit filterChange. WHILE an input method is composing THE navigation drawer SHALL filter by the text the field reports, and SHALL leave the composition, Enter, Escape and the arrow keys to the input method (TXI-4).
`NVD-81`	THE navigation drawer SHALL apply a filter WHILE filterable is true and filterValue holds a character that is not white space, and SHALL read the filter text as words: the runs of characters between white space. A destination or a group SHALL match WHILE its label contains every word, each anywhere in it and in any order, compared without regard to case, to the width of a character or to the marks on a letter, as the label's language compares (as the combobox compares, CMB-25). THE navigation drawer SHALL compare nothing else of a row — not its short label, its supporting text, its trailing text, its badge, its value or its href — and not a section's title. A disabled row SHALL match as any other row and stay disabled. It SHALL match only the items it holds: the items of a group that loads them when it opens (NVD-76) are not searched until they are given. THE navigation drawer SHALL NOT fetch, wait, debounce, rank or reorder anything for a filter.
`NVD-82`	WHILE a filter is applied THE navigation drawer SHALL show, in the order given: each row that matches; each group's row that holds a row that matches, at any depth; and every item inside a group whose own row matches, so that a group found by its name is shown whole. Every other row SHALL be hidden — not drawn, taking no space, not focusable and not exposed to assistive technology — together with what it holds. A section with no row shown SHALL be hidden with its heading and its divider; a section with a row shown SHALL keep both. A hidden row SHALL keep its open, its disabled state and its selection, and WHEN no filter is applied any more every row SHALL be shown as it was.
`NVD-84`	WHILE a filter is applied THE navigation drawer SHALL draw open, for the filter, each closed group that holds a row that matches and is shown, at any depth, so that every match is in view without the person opening anything, and SHALL draw every other group as its open says. Opening a group for the filter SHALL write nothing to the group's open, SHALL emit no toggle, and SHALL be drawn at once, without the motion of NVD-44; the group's row SHALL be exposed as expanded while it is drawn open. WHEN the person opens or closes a group while a filter is applied THE navigation drawer SHALL answer as NVD-45 says — setting open itself on the web and emitting toggle exactly once where open changes — and SHALL stop opening that group for the filter until the filter text changes. WHEN no filter is applied any more THE navigation drawer SHALL draw every group as its open says: the groups the filter opened close again, at once, and a group the person opened or closed stays as the person left it.
`NVD-85`	WHILE a filter is applied THE navigation drawer SHALL draw each row it shows as it draws that row without a filter, and SHALL NOT mark, in a label, the characters that a word of the filter text matched: no color, weight, fill or element of their own. What the filter leaves is the answer, as in a file tree's filter and a site's sidebar filter; a row SHALL be told from the others only by its own states — selected, disabled, hovered, pressed and focused — and as the active match (NVD-86). THE navigation drawer SHALL expose each label to assistive technology as the one text it is without a filter.
`NVD-86`	WHILE keyboard focus is in the filter field, a filter is applied and a row shown matches and is not disabled, THE navigation drawer SHALL make the first such row, in reading order, the active match — as soon as there is one, and the new first one whenever the result changes — and SHALL draw it as it draws that row while the row has keyboard focus, its focused tokens and its focus ring (NVD-10), without animation, while focus stays in the field, so that typing goes on editing the filter text; a pointer over a row SHALL NOT make it the active match, and WHILE focus is not in the field no row SHALL be drawn as one. WHILE no input method is composing, WHEN the person presses Enter THE navigation drawer SHALL take the active match as Enter on that row takes it — a destination activated (NVD-1, NVD-60), a group's row opened or closed (NVD-45) — and SHALL keep focus in the field unless the activation moves it (a link followed, a modal drawer closed, NVD-21); WHEN the person presses Down Arrow THE navigation drawer SHALL move focus to the active match and do nothing more. WHILE there is no active match the two keys SHALL do nothing of the drawer's own. WHEN the person presses Escape WHILE the field holds text THE navigation drawer SHALL empty it, emit filterChange once with the empty text, and keep focus in the field, as a native search field does; WHEN the person presses Escape WHILE the field is empty THE navigation drawer SHALL return focus to the element that had it before the filter shortcut moved it to the field (NVD-87), and otherwise SHALL do nothing of its own and let the key pass on, so that a modal drawer closes (NVD-20). Up Arrow, Home, End and the arrow keys along the line SHALL stay the field's.
`NVD-87`	WHILE filterable is true and filterShortcut holds exactly one chord THE navigation drawer SHALL draw that chord at the end of the filter field with the keyboard shortcut component, hosted as KBS-13 says — in its plain form, at size small, with convention auto, its legends and separators in comp.navigation-drawer.filter.shortcut.typescale and comp.navigation-drawer.filter.shortcut.color, and no cap, fill or edge (KBS-7) — only while the field is empty and does not have focus, SHALL expose it as the field's keyboard shortcut (KBS-12: aria-keyshortcuts on the web) with the drawn keys hidden from assistive technology, and SHALL give the hint no press of its own. WHEN the person presses that chord anywhere in the window, read as SRC-38 reads a chord and with its exceptions (a press something else has taken, a key repeating while held, an input-method composition and, for a chord without mod, ctrl or alt, focus in an element that takes text), THE navigation drawer SHALL keep the press from doing anything else and SHALL: WHILE it is expanded and shown, move focus to the field with its text selected; WHILE it is collapsed (a collapsible standard drawer, or the column of a collapsible modal drawer), emit expandedChange with true, apply it itself on the web as NVD-37 does, and move focus to the field once it is expanded. WHILE it is not shown (a standard drawer whose open is false, or a modal drawer that is closed and not collapsible) it SHALL NOT take the press: what opens it is the product's, or the app shell's (APS-33). THE navigation drawer SHALL listen only while it is part of what is shown and filterable is true, and SHALL stop when it is removed. IF another shown navigation drawer, tree view or search binds the same chord, the one shown first SHALL keep it and the others SHALL bind nothing and report it in debug builds, as SRC-39 says. WHILE filterShortcut is empty or holds more than one chord THE navigation drawer SHALL draw no hint and bind nothing, reporting more than one chord in debug builds.
`NVD-88`	WHEN the product asks the navigation drawer to focus its filter (the platform's method for it) WHILE filterable is true THE navigation drawer SHALL do what its chord does (NVD-87), whether or not filterShortcut is empty; WHILE it is a modal drawer that is closed it SHALL instead move focus to the field the next time it opens, in place of the destination NVD-19 would give focus to — so that an app shell, or a key of the product's own, can open the drawer and land in its field.
`NVD-89`	WHILE the filter field holds text THE navigation drawer SHALL draw, in the field's trailing-icon slot, an icon-only Tanrei Button of the text variant and the small size showing the glyph close of the system's icon set, not mirrored, named by filterClearLabel. WHEN it is activated THE navigation drawer SHALL empty the field, emit filterChange once with the empty text, and move focus to the field. WHILE filterClearLabel is empty and the product's words give none THE navigation drawer SHALL still draw the button, and in debug builds report that it has no accessible name. The hint of NVD-87 and the clear button SHALL never be drawn together.
`NVD-90`	WHILE a filter is applied THE navigation drawer SHALL draw a status line at the top of the results, where its first item would stand, the items following it: filterCountText with its place {count} filled by the number of rows that match WHILE a row matches and filterCountHidden is false, and filterEmptyText WHILE no row matches, in place of the items, all of them hidden. It SHALL draw the line in comp.navigation-drawer.filter.status.typescale and comp.navigation-drawer.filter.status.color, inset as a row's content is (comp.navigation-drawer.item.padding-inline.regular for regular and comp.navigation-drawer.item.padding-inline.compact for compact), wrapping and growing with enlarged text, as text of its own direction (NVD-52), taking no focus and no state, and hidden from assistive technology, which NVD-91 tells the same words. WHILE a row matches and filterCountHidden is true it SHALL draw no line. WHILE the words it would draw are empty and the product's words give none THE navigation drawer SHALL draw nothing in their place and in debug builds report it.
`NVD-91`	WHEN the result of a filter changes — the filter text or the items change while a filter is applied — and has then stayed as it is for one second (the pause that ends a type-ahead run, TRV-23), THE navigation drawer SHALL tell assistive technology once, politely and without moving focus, filterCountText with its place {count} filled by the number of rows that match, or filterEmptyText WHILE no row matches; WHEN no filter is applied any more it SHALL say nothing. It SHALL say them whether or not filterCountHidden is true, through one status of its own that is not drawn (the line of NVD-90 is what is drawn) — on the web an element with the status role and aria-atomic true, inside the drawer — and never through the field's name or description. WHILE filterCountText is empty and the product's words give none THE navigation drawer SHALL say no count and in debug builds report it.
`NVD-92`	THE navigation drawer SHALL change nothing but what it draws for a filter: value, expanded, open, every group's open (except where the person opens or closes one, NVD-84) and the distance scrollOffset measures SHALL stay as they were, and it SHALL keep filterValue no longer than its own lifetime and write it to no storage, as NVD-62 says of a group's open. WHEN a filter begins to be applied THE navigation drawer SHALL remember how far its items are scrolled, and WHEN the filter text changes while a filter is applied it SHALL scroll its items to their start; WHEN no filter is applied any more it SHALL, WHILE keyboard focus is on a row, keep that row where it is in the view as far as the scrolling allows, and otherwise scroll back to where the items stood when the filter began. A selected destination that the filter hides SHALL stay selected and SHALL be brought into view (NVD-57) only once it is shown again.
`NVD-93`	WHEN a filter comes to hide the row that has keyboard focus (the product sets filterValue, or changes the items) THE navigation drawer SHALL move focus to the filter field. WHILE a filter is applied and keyboard focus is on a destination, a group's row or a group's chevron, WHEN the person presses Escape THE navigation drawer SHALL, WHILE variant is standard, open, as the person would (open set and toggle emitted for each, NVD-45), the groups the filter had opened around that row, so that it stays shown, then empty the filter as NVD-86 does and keep focus on that row, which NVD-92 keeps in view, so that a person who found a place by the filter sees it among its neighbours; WHILE the drawer is modal, Escape SHALL close it as NVD-20 says and leave the filter as it is.
`NVD-94`	THE navigation drawer SHALL draw every change a filter makes — rows hidden and shown, groups opened for the filter and closed again — at once, without the motions of NVD-41 and NVD-44, whether or not motion is reduced; a group the person opens or closes during a filter moves as NVD-44 says.
`NVD-95`	THE navigation drawer SHALL expose the filter field as a search field — on the web an input of type search, which has the searchbox role — named by filterLabel, with filterPlaceholder as its placeholder, controlling the drawer's list of items (aria-controls on the web), after the header and before the items in reading and focus order; each shown destination and group with its position among the shown items of its level and their number, so that a person is told the size of what the filter left; and the rows the filter hides not at all. WHILE filterable is true and filterLabel is empty THE navigation drawer SHALL still draw the field, and in debug builds report that it has no accessible name.

Correspondencia de nombres por plataforma

Paridad no significa API idénticas. Cada plataforma expresa el mismo contrato con su propio estilo.

Especificación	Web	SwiftUI	Jetpack Compose	Flutter	React Native
Componente	`tanrei-navigation-drawer`	`TanreiNavigationDrawer`	`TanreiNavigationDrawer`	`TanreiNavigationDrawer`	`NavigationDrawer`
`variant` · Propiedad	`variant`	`variant`	`variant`	`variant`	`variant`
`open` · Propiedad	`open`	`isPresented`	`drawerState`	`open`	`open`
`collapsible` · Propiedad	`collapsible`	`isCollapsible`	`collapsible`	`collapsible`	`collapsible`
`expanded` · Propiedad	`expanded`	`isExpanded`	`expanded`	`extended`	`expanded`
`collapsedLabels` · Propiedad	`collapsedLabels`	`collapsedLabelVisibility`	`collapsedLabelVisibility`	`labelType`	`collapsedLabelVisibility`
`density` · Propiedad	`density`	`density`	`density`	`density`	`density`
`chevron` · Propiedad	`chevron`	`chevron`	`chevron`	`chevron`	`chevron`
`guides` · Propiedad	`guides`	`guides`	`guides`	`guides`	`guides`
`indent` · Propiedad	`indent`	`indent`	`indent`	`indent`	`indent`
`highlight` · Propiedad	`highlight`	`highlight`	`highlight`	`highlight`	`highlight`
`iconSpace` · Propiedad	`iconSpace`	`iconSpace`	`iconSpace`	`iconSpace`	`iconSpace`
`expandable` · Propiedad	`expandable`	`expandable`	`expandable`	`expandable`	`expandable`
`labelWrap` · Propiedad	`labelWrap`	`labelWrap`	`labelWrap`	`labelWrap`	`labelWrap`
`supportingWrap` · Propiedad	`supportingWrap`	`supportingWrap`	`supportingWrap`	`supportingWrap`	`supportingWrap`
`responsive` · Propiedad	`responsive`	`isResponsive`	`responsive`	`responsive`	`responsive`
`value` · Propiedad	`value`	`selection`	`selected`	`selectedIndex`	`value`
`revealSelected` · Propiedad	`revealSelected`	`revealsSelection`	`revealSelected`	`revealSelected`	`revealSelected`
`selectableGroups` · Propiedad	`selectableGroups`	`selectableGroups`	`selectableGroups`	`selectableGroups`	`selectableGroups`
`scrollOffset` · Propiedad	`scrollOffset`	`scrollOffset`	`scrollState`	`scrollController`	`scrollOffset`
`stickyParents` · Propiedad	`stickyParents`	`stickyParents`	`stickyParents`	`stickyParents`	`stickyParents`
`stickyMax` · Propiedad	`stickyMax`	`stickyMax`	`stickyMax`	`stickyMax`	`stickyMax`
`loadingLabel` · Propiedad	`loadingLabel`	`loadingLabel`	`loadingLabel`	`loadingLabel`	`loadingLabel`
`filterable` · Propiedad	`filterable`	`isFilterable`	`filterable`	`filterable`	`filterable`
`filterValue` · Propiedad	`filterValue`	`filterText`	`filterValue`	`filterValue`	`filterValue`
`filterLabel` · Propiedad	`filterLabel`	`filterLabel`	`filterLabel`	`filterLabel`	`filterLabel`
`filterPlaceholder` · Propiedad	`filterPlaceholder`	`filterPrompt`	`filterPlaceholder`	`filterPlaceholder`	`filterPlaceholder`
`filterEmptyText` · Propiedad	`filterEmptyText`	`filterEmptyText`	`filterEmptyText`	`filterEmptyText`	`filterEmptyText`
`filterCountText` · Propiedad	`filterCountText`	`filterCountText`	`filterCountText`	`filterCountText`	`filterCountText`
`filterCountHidden` · Propiedad	`filterCountHidden`	`isFilterCountHidden`	`filterCountHidden`	`filterCountHidden`	`filterCountHidden`
`filterClearLabel` · Propiedad	`filterClearLabel`	`filterClearLabel`	`filterClearLabel`	`filterClearLabel`	`filterClearLabel`
`filterShortcut` · Propiedad	`filterShortcut`	`filterShortcut`	`filterShortcut`	`filterShortcut`	`filterShortcut`
`label` · Propiedad	`label`	`accessibilityLabel`	`contentDescription`	`semanticLabel`	`accessibilityLabel`
`change` · Evento	`change`	`selection`	`onClick`	`onDestinationSelected`	`onValueChange`
`reselect` · Evento	`reselect`	`onReselect`	`onClick`	`onDestinationSelected`	`onReselect`
`close` · Evento	`close`	`isPresented`	`drawerState`	`onClose`	`onClose`
`expandedChange` · Evento	`expandedchange`	`isExpanded`	`onExpandedChange`	`onExtendedChanged`	`onExpandedChange`
`presentationChange` · Evento	`presentationchange`	`onPresentationChange`	`onPresentationChange`	`onPresentationChanged`	`onPresentationChange`
`filterChange` · Evento	`filterchange`	`filterText`	`onFilterValueChange`	`onFilterChanged`	`onFilterChange`
Notas	Children are `<tanrei-navigation-drawer-item>`, `<tanrei-navigation-drawer-group>` and `<tanrei-navigation-drawer-section>` elements, in order; header buttons (icon-only `<tanrei-button>`s) and the main action (`<tanrei-main-action-button>`) are children with `slot="header-button"` and `slot="main-action"`, and the header slot is `header`. `collapsedLabels` is the `collapsed-labels` attribute; `expanded` is reflected, and so is a read-only `collapsed` state attribute for styling. Modal: a `<dialog>` in the shadow root opened with `showModal()`, its `::backdrop` the scrim; Escape and a press on the backdrop close it, the host sets `open` to false and fires `close`; a collapsible modal drawer keeps its column in the host's layout box and widens the dialog from it. Standard: a `<nav>` named by `label`. The drawer selects the activated destination itself (sets `value`) before firing `change`, sets `expanded` (or `open`) before firing `expandedchange`, and sets a group's `open` before the group fires `toggle`. It sets `aria-expanded` and `aria-controls` on its first header button's inner button through the Button's `ariaExpanded` / `ariaControlsElements` element properties, and the Main Action Button's `extended` from its own form. `responsive` is an attribute: the element reads its system's `breakpoint.expanded` and `breakpoint.collapsed` custom properties from its computed style, listens to the two widths with `matchMedia`, exposes the result as the read-only `presentation` property (reflected as a state attribute for styling) and fires `presentationchange` with `detail.presentation`; nothing about the presentation is written to `variant`, `open` or `expanded`, and nothing is kept in storage. Before the element is upgraded, and in the React wrapper on a server, no dialog is open and nothing is inert. A collapsed cell that draws no label shows its name in a plain tooltip. Insets are `env(safe-area-inset-*)`. It lags the spec: it ships an earlier form of the drawer, with a separate rail element beside it. It does not yet follow NVD-57 to NVD-64, nor the parts of NVD-1, NVD-21 and NVD-23 that go with them. `reveal-selected` is an attribute. `scroll-offset` is an attribute read once, for the first frame, and `scrollOffset` a property whose getter returns the scroller's present `scrollTop` and whose setter writes it; the scroller has `overscroll-behavior: contain` and `scroll-behavior: auto`, and bringing the selection into view is a write to `scrollTop`, never `scrollIntoView` (which would also scroll the page). For a link destination `change` and `reselect` are cancelable, carry `detail.href` beside `detail.value`, and are fired from the anchor's `click` only when `event.button` is 0, no modifier key is down, the click was not already cancelled, and the item's `target` is `same` and it has no `download`; cancelling one calls `preventDefault()` on that click. The drawer does not set `value` for a link. Nothing is read from or written to `sessionStorage` or `localStorage`: a site keeps the groups' `open` and `scrollOffset` itself (on `toggle` and on `pagehide`) and writes them back as attributes in the page's markup, or in an inline script placed after the drawer's markup, before the elements are upgraded. `density` is reflected; a value a design system added is read from its own tokens, falling back to regular's. `selectableGroups` is the `selectable-groups` attribute. The attributes are `chevron`, `guides`, `indent` (auto or a number), `highlight`, `icon-space`, `expandable` (`expandable="false"` turns it off), `label-wrap`, `supporting-wrap`, `sticky-parents`, `sticky-max` and `loading-label`; on the items `supporting-text`, `supporting-position`, and on a group `open-icon`, `trailing-text`, `loading` and the `trailing` slot. Filter (NVD-79 to NVD-95): the attributes are filterable, filter-value, filter-label, filter-placeholder, filter-empty-text, filter-count-text, filter-count-hidden, filter-clear-label and filter-shortcut (a space-separated list of chords); filterchange carries detail.value. The field is a `<tanrei-text-input type="search" variant="stacked">` in the shadow root between the header and the items (part `filter`), its leading glyph and its clear button (a `<tanrei-button>`) slotted into it; the drawer sets aria-controls (the drawer's list, through ariaControlsElements) and aria-keyshortcuts on its native input. The status line (part `filter-status`) stands first in the list of items, hidden from assistive technology; the status is a visually hidden element with role="status" and aria-atomic="true" in the shadow root. A row the filter hides takes `display: none` from a state attribute it writes on its own host (`data-filter-hidden`), a section with no row shown likewise, and a group opened for the filter draws its items open without writing `open`. The active match is drawn by a state attribute on its host (`data-filter-active`). `focusFilter()` is the method of NVD-88. The chord is read as the search reads its own (SRC-38), and the drawer, the search and the tree view share one registry of the chords that are bound (SRC-39).	`TanreiNavigationDrawer(variant:, isPresented: Binding<Bool>, selection: Binding<Value>, isCollapsible:, isExpanded: Binding<Bool>, collapsedLabelVisibility:, onReselect:) { TanreiNavigationDrawerItem(…); TanreiNavigationDrawerGroup(…) { … }; TanreiNavigationDrawerSection(…) { … } } header: { … } headerButtons: { … } mainAction: { … }`, and for a modal drawer the modifier `.tanreiNavigationDrawer(isPresented:…)` on the content it covers. Closing writes `false` to `isPresented` (close); the menu button writes `isExpanded` (expandedChange). The modal drawer carries the modal trait and answers the escape gesture (`accessibilityAction(.escape)`). It lags the spec: it ships an earlier form of the drawer (no collapsed form, groups or trailing slot; its `badge:` string is the trailing text), with a separate rail component beside it. Not built on this platform yet: the 48 row with the menu item's corners in both forms, a collapsed cell that is the row without its label (`collapsedLabels` defaults to never), nested rows whose content alone starts further in while their item containers keep the full width (NVD-13), the header slot's inherited text style and color (NVD-38), a selection that changes color in place, and `responsive` with its event (NVD-53 to NVD-55): the width comes from a `GeometryReader` on the window's scene, or `horizontalSizeClass` where the product prefers Apple's own classes; `onPresentationChange` is a closure. Also not built yet (NVD-57 to NVD-64): `revealsSelection: Bool`, and `scrollOffset: Binding<CGFloat>` over the items' `ScrollView` (a `ScrollPosition` where the deployment target has it), which the product may keep in `@SceneStorage`. Not yet: the heading's letter-spacing by the script of its text (NVD-16, PRS-20). Not built yet: density (NVD-65), a `density` parameter as the tree view's on this platform; and this platform's drawer still reads the tokens that the density axis made per density (the row height, paddings, gap, nesting indent, icon sizes, label style, the collapsed column and the heading height), each now one value per density in the generated tokens, so it does not build against them until it catches up. Not built yet: selectableGroups (NVD-66, NVD-67) — a group that is a destination, with its row choosing it and its chevron a control of its own that opens and closes it. Not built yet: the row model shared with the tree view (chevron, guides, indent, highlight, iconSpace, expandable, labelWrap and supportingWrap, supporting text, one-line labels with a tooltip where cut, a group's trailing content, openIcon and loading row, stickyParents and stickyMax; NVD-68 to NVD-77). Filter (NVD-79 to NVD-95), not built yet: `filterText: Binding<String>`; the chord is a `.keyboardShortcut` on hardware keyboards; the status is an `AccessibilityNotification.Announcement` with the polite priority; `focusFilter()` is a `FocusState` the product can set.	Compose idiom (as `ModalNavigationDrawer` and `DismissibleNavigationDrawer`, and Material 3 Expressive's `WideNavigationRail` for the collapsed form): `TanreiNavigationDrawer(variant, drawerState, collapsible, expanded, onExpandedChange, collapsedLabelVisibility, header = { … }, headerButtons = { … }, mainAction = { … }, drawerContent = { TanreiNavigationDrawerItem(…); TanreiNavigationDrawerGroup(…) { … }; TanreiNavigationDrawerSection(…) { … } }, content = { … })`. `drawerState` (`rememberTanreiDrawerState`) is open or closed; the drawer closes it itself on the scrim, back and drag, and its `confirmValueChange` sees the close. As for the bar, the drawer's `value` and a destination's `value` both map to the item's `selected`, and one `onClick` covers change and reselect. The modal sheet sets a pane title from `contentDescription` and is drawn in a window of its own (a `Dialog`), as `TanreiDialog` is, which traps focus, handles back and hides the content behind from TalkBack. It lags the spec: it ships an earlier form of the drawer, with a separate rail component beside it. Not built on this platform yet: the 48 row with the menu item's corners in both forms, a collapsed cell that is the row without its label (`collapsedLabels` defaults to never), nested rows whose content alone starts further in while their item containers keep the full width (NVD-13), the header slot's inherited text style and color (NVD-38), a selection that changes color in place, and `responsive` with its event (NVD-53 to NVD-55): the width comes from `LocalWindowInfo.current.containerSize` (or `currentWindowAdaptiveInfo()` where the product has it); `onPresentationChange` is a lambda and `drawerState` is closed by the drawer when the presentation changes. Also not built yet (NVD-57 to NVD-64): `revealSelected: Boolean`, and a hoisted `scrollState: ScrollState = rememberScrollState()`, which is saved and restored by `rememberSaveable` as any scroll state is; the drawer writes nothing itself. Not yet: the heading's letter-spacing by the script of its text (NVD-16, PRS-20). Not built yet: density (NVD-65), a `density` parameter as the tree view's on this platform; and this platform's drawer still reads the tokens that the density axis made per density (the row height, paddings, gap, nesting indent, icon sizes, label style, the collapsed column and the heading height), each now one value per density in the generated tokens, so it does not build against them until it catches up. Not built yet: selectableGroups (NVD-66, NVD-67) — a group that is a destination, with its row choosing it and its chevron a control of its own that opens and closes it. Not built yet: the row model shared with the tree view (chevron, guides, indent, highlight, iconSpace, expandable, labelWrap and supportingWrap, supporting text, one-line labels with a tooltip where cut, a group's trailing content, openIcon and loading row, stickyParents and stickyMax; NVD-68 to NVD-77). Filter (NVD-79 to NVD-95), not built yet: `filterValue` with `onFilterValueChange`; the status is a polite `liveRegion` node; the chord is read from hardware keys (`onPreviewKeyEvent`); `focusFilter` is a `FocusRequester` in the drawer's state.	Flutter idiom (as `NavigationDrawer`, with the rail widget's `extended` and `labelType` for the collapsed form): `TanreiNavigationDrawer(variant:, collapsible:, extended:, onExtendedChanged:, labelType:, selectedIndex:, onDestinationSelected:, headerButtons: [...], mainAction:, header:, children: [TanreiNavigationDrawerDestination(…), TanreiNavigationDrawerGroup(…), TanreiNavigationDrawerSection(…), …])`. A destination's value is its index among the destinations, counted in reading order through sections and groups, open or not, as `NavigationDrawer` counts its destinations. `labelType` is `all`, `selected` or `none`. `open` shows or hides the drawer in both variants. A modal drawer is a controlled overlay in a `Stack` over the page — not `Scaffold.drawer`, which would need Material — with its own scrim and motion, a `FocusScope` that keeps focus in, and the page's semantics blocked; Escape, back (`PopScope`), a drag or fling, the menu button and choosing a destination call `onClose` once. It lags the spec: it ships an earlier form of the drawer, with a separate rail component beside it. Not built on this platform yet: the 48 row with the menu item's corners in both forms, a collapsed cell that is the row without its label (`collapsedLabels` defaults to never), nested rows whose content alone starts further in while their item containers keep the full width (NVD-13), the header slot's inherited text style and color (NVD-38), a selection that changes color in place, and `responsive` with its event (NVD-53 to NVD-55): the width comes from `MediaQuery.sizeOf(context).width`; `onPresentationChanged` is a `ValueChanged<TanreiNavigationDrawerPresentation>` and `onClose` is called when a change of presentation closes the drawer. Also not built yet (NVD-57 to NVD-64): `revealSelected: bool`, and `scrollController: ScrollController?` (its `initialScrollOffset` is the first frame's offset); a `PageStorageKey` or a `restorationId` on the product's side keeps the offset, the drawer writes nothing itself. Not yet: the heading's letter-spacing by the script of its text (NVD-16, PRS-20). Not built yet: density (NVD-65), a `density` parameter as the tree view's on this platform; and this platform's drawer still reads the tokens that the density axis made per density (the row height, paddings, gap, nesting indent, icon sizes, label style, the collapsed column and the heading height), each now one value per density in the generated tokens, so it does not build against them until it catches up. Not built yet: selectableGroups (NVD-66, NVD-67) — a group that is a destination, with its row choosing it and its chevron a control of its own that opens and closes it. Not built yet: the row model shared with the tree view (chevron, guides, indent, highlight, iconSpace, expandable, labelWrap and supportingWrap, supporting text, one-line labels with a tooltip where cut, a group's trailing content, openIcon and loading row, stickyParents and stickyMax; NVD-68 to NVD-77). Filter (NVD-79 to NVD-95), not built yet: `filterValue` with `onFilterChanged`; the chord is a `Shortcuts` entry; the status is `SemanticsService.announce` with the polite assertiveness; `focusFilter` is a `FocusNode` the product may pass.	Controlled: `open`, `expanded`, `value`, `onValueChange`, `onExpandedChange`, `onClose`, an `items` data array, `headerButtons` and `mainAction` elements and a `header` node. A modal drawer is presented in a transparent `Modal` with its own motion and scrim; `onRequestClose` (Android back) calls `onClose`. Destinations have the `button` role with `accessibilityState.selected`; group rows the `button` role with `accessibilityState.expanded`; headings the `header` role. Insets come from its own `insets` prop, falling back to `TanreiProvider`'s. It lags the spec: it ships an earlier form of the drawer, with a separate rail component beside it. Not built on this platform yet: the 48 row with the menu item's corners in both forms, a collapsed cell that is the row without its label (`collapsedLabels` defaults to never), nested rows whose content alone starts further in while their item containers keep the full width (NVD-13), the header slot's inherited text style and color (NVD-38), a selection that changes color in place, and `responsive` with its event (NVD-53 to NVD-55): the width comes from `useWindowDimensions()`; `onPresentationChange` receives `'standard' \| 'column' \| 'modal'`, and `onClose` is called when a change of presentation closes the drawer. Also not built yet (NVD-57 to NVD-64): `revealSelected`, and `scrollOffset` as the first frame's offset with a ref method `getScrollOffset()` for reading it; the drawer writes to no storage. Not yet: the heading's letter-spacing by the script of its text (NVD-16, PRS-20). Not built yet: density (NVD-65), a `density` parameter as the tree view's on this platform; and this platform's drawer still reads the tokens that the density axis made per density (the row height, paddings, gap, nesting indent, icon sizes, label style, the collapsed column and the heading height), each now one value per density in the generated tokens, so it does not build against them until it catches up. Not built yet: selectableGroups (NVD-66, NVD-67) — a group that is a destination, with its row choosing it and its chevron a control of its own that opens and closes it. Not built yet: the row model shared with the tree view (chevron, guides, indent, highlight, iconSpace, expandable, labelWrap and supportingWrap, supporting text, one-line labels with a tooltip where cut, a group's trailing content, openIcon and loading row, stickyParents and stickyMax; NVD-68 to NVD-77). Filter (NVD-79 to NVD-95), not built yet: controlled `filterValue` with `onFilterChange`; the status is `AccessibilityInfo.announceForAccessibilityWithOptions` with `queue: true`; `focusFilter()` is on the component's ref.

Tokens

Token	Alias de	Valor resuelto (claro)
`--tanrei-comp-navigation-drawer-breakpoint-collapsed`	`sys.breakpoint.medium`	600px
`--tanrei-comp-navigation-drawer-breakpoint-expanded`	`sys.breakpoint.expanded`	1024px
`--tanrei-comp-navigation-drawer-collapsed-selected-disabled-item-container-color`	—	#262626 · 16%
`--tanrei-comp-navigation-drawer-collapsed-selected-disabled-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-selected-disabled-item-icon-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-selected-disabled-item-label-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-selected-disabled-item-state-layer-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-selected-disabled-item-supporting-text-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-selected-disabled-item-trailing-icon-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-selected-disabled-item-trailing-text-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-selected-focused-item-container-color`	—	#262626 · 24.4%
`--tanrei-comp-navigation-drawer-collapsed-selected-focused-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-selected-focused-item-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-focused-item-label-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-focused-item-state-layer-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-focused-item-supporting-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-focused-item-trailing-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-focused-item-trailing-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-hovered-item-container-color`	—	#262626 · 22.7%
`--tanrei-comp-navigation-drawer-collapsed-selected-hovered-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-selected-hovered-item-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-hovered-item-label-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-hovered-item-state-layer-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-hovered-item-supporting-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-hovered-item-trailing-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-hovered-item-trailing-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-item-container-color`	`comp.navigation-drawer.selected.item.container.color`	#262626 · 16%
`--tanrei-comp-navigation-drawer-collapsed-selected-item-icon-indicator-color`	`comp.navigation-drawer.selected.item.icon-indicator.color`	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-selected-item-icon-color`	`comp.navigation-drawer.selected.item.icon.color`	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-item-label-color`	`comp.navigation-drawer.selected.item.label.color`	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-item-state-layer-color`	`comp.navigation-drawer.collapsed-selected.item.icon.color`	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-item-supporting-text-color`	`comp.navigation-drawer.selected.item.supporting-text.color`	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-item-trailing-icon-color`	`comp.navigation-drawer.selected.item.trailing-icon.color`	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-item-trailing-text-color`	`comp.navigation-drawer.selected.item.trailing-text.color`	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-pressed-item-container-color`	—	#262626 · 24.4%
`--tanrei-comp-navigation-drawer-collapsed-selected-pressed-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-selected-pressed-item-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-pressed-item-label-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-pressed-item-state-layer-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-pressed-item-supporting-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-pressed-item-trailing-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-selected-pressed-item-trailing-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-collapsed-unselected-disabled-item-container-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-unselected-disabled-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-unselected-disabled-item-icon-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-unselected-disabled-item-label-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-unselected-disabled-item-state-layer-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-unselected-disabled-item-supporting-text-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-unselected-disabled-item-trailing-icon-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-unselected-disabled-item-trailing-text-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-collapsed-unselected-focused-item-container-color`	—	#4b4b4b · 10%
`--tanrei-comp-navigation-drawer-collapsed-unselected-focused-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-unselected-focused-item-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-focused-item-label-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-focused-item-state-layer-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-focused-item-supporting-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-focused-item-trailing-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-focused-item-trailing-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-hovered-item-container-color`	—	#4b4b4b · 8%
`--tanrei-comp-navigation-drawer-collapsed-unselected-hovered-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-unselected-hovered-item-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-hovered-item-label-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-hovered-item-state-layer-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-hovered-item-supporting-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-hovered-item-trailing-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-hovered-item-trailing-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-item-container-color`	`comp.navigation-drawer.unselected.item.container.color`	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-unselected-item-icon-indicator-color`	`comp.navigation-drawer.unselected.item.icon-indicator.color`	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-unselected-item-icon-color`	`comp.navigation-drawer.unselected.item.icon.color`	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-item-label-color`	`comp.navigation-drawer.unselected.item.label.color`	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-item-state-layer-color`	`comp.navigation-drawer.collapsed-unselected.item.icon.color`	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-item-supporting-text-color`	`comp.navigation-drawer.unselected.item.supporting-text.color`	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-item-trailing-icon-color`	`comp.navigation-drawer.unselected.item.trailing-icon.color`	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-item-trailing-text-color`	`comp.navigation-drawer.unselected.item.trailing-text.color`	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-pressed-item-container-color`	—	#4b4b4b · 10%
`--tanrei-comp-navigation-drawer-collapsed-unselected-pressed-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-collapsed-unselected-pressed-item-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-pressed-item-label-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-pressed-item-state-layer-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-pressed-item-supporting-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-pressed-item-trailing-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-unselected-pressed-item-trailing-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-container-width-compact`	—	56px
`--tanrei-comp-navigation-drawer-collapsed-container-width-regular`	—	72px
`--tanrei-comp-navigation-drawer-collapsed-item-container-padding-block-compact`	`sys.space.space100`	8px
`--tanrei-comp-navigation-drawer-collapsed-item-container-padding-block-regular`	`sys.space.space150`	12px
`--tanrei-comp-navigation-drawer-collapsed-item-container-padding-inline`	`sys.space.space50`	4px
`--tanrei-comp-navigation-drawer-collapsed-item-container-shape`	`comp.navigation-drawer.item.container.shape`	6px
`--tanrei-comp-navigation-drawer-collapsed-item-container-width-compact`	—	32px
`--tanrei-comp-navigation-drawer-collapsed-item-container-width-regular`	—	48px
`--tanrei-comp-navigation-drawer-collapsed-item-gap`	`sys.space.space50`	4px
`--tanrei-comp-navigation-drawer-container-color-modal`	`sys.color.surface-container-low`	#f9f9f9
`--tanrei-comp-navigation-drawer-container-color-standard`	`sys.color.surface`	#ffffff
`--tanrei-comp-navigation-drawer-container-elevation-modal`	`sys.elevation.level2`	0px 0px 0px 1px rgb(0 0 0 / 0.08), 0px 1px 2px 0px rgb(0 0 0 / 0.04)
`--tanrei-comp-navigation-drawer-container-elevation-standard`	`sys.elevation.level0`
`--tanrei-comp-navigation-drawer-container-gap-compact`	—	2px
`--tanrei-comp-navigation-drawer-container-gap-regular`	—	4px
`--tanrei-comp-navigation-drawer-container-padding-block`	`sys.space.space150`	12px
`--tanrei-comp-navigation-drawer-container-padding-inline`	`sys.space.space150`	12px
`--tanrei-comp-navigation-drawer-container-shape-modal`	`sys.shape.corner.large`	12px
`--tanrei-comp-navigation-drawer-container-shape-standard`	`sys.shape.corner.none`	0px
`--tanrei-comp-navigation-drawer-container-width`	—	240px
`--tanrei-comp-navigation-drawer-disabled-opacity`	—	1
`--tanrei-comp-navigation-drawer-filter-gap`	`sys.space.space150`	12px
`--tanrei-comp-navigation-drawer-filter-shortcut-color`	`sys.color.on-surface-variant`	#4b4b4b
`--tanrei-comp-navigation-drawer-filter-status-color`	`sys.color.on-surface-variant`	#4b4b4b
`--tanrei-comp-navigation-drawer-focused-opacity`	—	1
`--tanrei-comp-navigation-drawer-guide-color`	`sys.color.outline-variant`	#000000 · 8%
`--tanrei-comp-navigation-drawer-guide-width`	`sys.border.hairline`	1px
`--tanrei-comp-navigation-drawer-header-color`	`sys.color.on-surface`	#1b1b1b
`--tanrei-comp-navigation-drawer-header-gap`	`sys.space.space300`	24px
`--tanrei-comp-navigation-drawer-header-item-gap`	`sys.space.space100`	8px
`--tanrei-comp-navigation-drawer-heading-color`	`sys.color.on-surface-variant`	#4b4b4b
`--tanrei-comp-navigation-drawer-heading-height-compact`	—	28px
`--tanrei-comp-navigation-drawer-heading-height-regular`	—	36px
`--tanrei-comp-navigation-drawer-hovered-opacity`	—	1
`--tanrei-comp-navigation-drawer-item-container-height-compact`	—	32px
`--tanrei-comp-navigation-drawer-item-container-height-regular`	—	48px
`--tanrei-comp-navigation-drawer-item-container-shape`	`sys.shape.corner.small`	6px
`--tanrei-comp-navigation-drawer-item-gap`	`sys.space.space150`	12px
`--tanrei-comp-navigation-drawer-item-icon-indicator-height-compact`	`comp.navigation-drawer.item.icon.size.compact`	16px
`--tanrei-comp-navigation-drawer-item-icon-indicator-height-regular`	`comp.navigation-drawer.item.icon.size.regular`	24px
`--tanrei-comp-navigation-drawer-item-icon-indicator-shape`	`sys.shape.corner.full`	9999px
`--tanrei-comp-navigation-drawer-item-icon-indicator-width-compact`	`comp.navigation-drawer.item.icon.size.compact`	16px
`--tanrei-comp-navigation-drawer-item-icon-indicator-width-regular`	`comp.navigation-drawer.item.icon.size.regular`	24px
`--tanrei-comp-navigation-drawer-item-icon-size-compact`	`sys.icon.extra-small`	16px
`--tanrei-comp-navigation-drawer-item-icon-size-regular`	`sys.icon.medium`	24px
`--tanrei-comp-navigation-drawer-item-nest-indent-compact`	`sys.space.space300`	24px
`--tanrei-comp-navigation-drawer-item-nest-indent-regular`	`sys.space.space450`	36px
`--tanrei-comp-navigation-drawer-item-padding-block-compact`	—	2px
`--tanrei-comp-navigation-drawer-item-padding-block-regular`	—	4px
`--tanrei-comp-navigation-drawer-item-padding-inline-compact`	`sys.space.space100`	8px
`--tanrei-comp-navigation-drawer-item-padding-inline-regular`	`sys.space.space150`	12px
`--tanrei-comp-navigation-drawer-item-trailing-icon-size-compact`	`sys.icon.extra-small`	16px
`--tanrei-comp-navigation-drawer-item-trailing-icon-size-regular`	`sys.icon.small`	20px
`--tanrei-comp-navigation-drawer-motion-disclosure-duration`	`sys.motion.role.disclosure`	400ms
`--tanrei-comp-navigation-drawer-motion-disclosure-easing`	`sys.motion.easing.spatial`	cubic-bezier(0.2, 0, 0, 1)
`--tanrei-comp-navigation-drawer-motion-enter-duration`	`sys.motion.role.appear.sheet.enter`	400ms
`--tanrei-comp-navigation-drawer-motion-enter-easing`	`sys.motion.easing.enter`	cubic-bezier(0.2, 0, 0, 1)
`--tanrei-comp-navigation-drawer-motion-exit-duration`	`sys.motion.role.appear.sheet.exit`	350ms
`--tanrei-comp-navigation-drawer-motion-exit-easing`	`sys.motion.easing.exit`	cubic-bezier(0.3, 0, 1, 1)
`--tanrei-comp-navigation-drawer-motion-expand-duration`	`sys.motion.role.resize.large`	400ms
`--tanrei-comp-navigation-drawer-motion-expand-easing`	`sys.motion.easing.spatial`	cubic-bezier(0.2, 0, 0, 1)
`--tanrei-comp-navigation-drawer-motion-feedback-duration`	`sys.motion.role.feedback`	450ms
`--tanrei-comp-navigation-drawer-motion-selection-duration`	`sys.motion.role.selection.mark`	250ms
`--tanrei-comp-navigation-drawer-motion-selection-easing`	`sys.motion.easing.spatial`	cubic-bezier(0.2, 0, 0, 1)
`--tanrei-comp-navigation-drawer-motion-state-duration`	`sys.motion.role.state.large`	250ms
`--tanrei-comp-navigation-drawer-motion-state-easing`	`sys.motion.easing.state`	cubic-bezier(0.2, 0, 0, 1)
`--tanrei-comp-navigation-drawer-outline-color-modal`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-outline-color-standard`	`sys.color.outline-variant`	#000000 · 8%
`--tanrei-comp-navigation-drawer-outline-width`	`sys.border.hairline`	1px
`--tanrei-comp-navigation-drawer-pressed-opacity`	—	1
`--tanrei-comp-navigation-drawer-scrim-blur`	`comp.modal-layer.scrim.blur`	0px
`--tanrei-comp-navigation-drawer-scrim-color`	`comp.modal-layer.scrim.color`	#000000 · 40%
`--tanrei-comp-navigation-drawer-selected-disabled-item-container-color`	—	#262626 · 16%
`--tanrei-comp-navigation-drawer-selected-disabled-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-selected-disabled-item-icon-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-selected-disabled-item-label-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-selected-disabled-item-state-layer-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-selected-disabled-item-supporting-text-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-selected-disabled-item-trailing-icon-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-selected-disabled-item-trailing-text-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-selected-focused-item-container-color`	—	#262626 · 24.4%
`--tanrei-comp-navigation-drawer-selected-focused-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-selected-focused-item-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-focused-item-label-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-focused-item-state-layer-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-focused-item-supporting-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-focused-item-trailing-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-focused-item-trailing-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-hovered-item-container-color`	—	#262626 · 22.7%
`--tanrei-comp-navigation-drawer-selected-hovered-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-selected-hovered-item-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-hovered-item-label-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-hovered-item-state-layer-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-hovered-item-supporting-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-hovered-item-trailing-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-hovered-item-trailing-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-item-container-color`	`sys.color.secondary-container`	#262626 · 16%
`--tanrei-comp-navigation-drawer-selected-item-icon-indicator-color`	`comp.navigation-drawer.unselected.item.icon-indicator.color`	#000000 · 0%
`--tanrei-comp-navigation-drawer-selected-item-icon-color`	`sys.color.on-secondary-container`	#262626
`--tanrei-comp-navigation-drawer-selected-item-label-color`	`sys.color.on-secondary-container`	#262626
`--tanrei-comp-navigation-drawer-selected-item-state-layer-color`	`comp.navigation-drawer.selected.item.label.color`	#262626
`--tanrei-comp-navigation-drawer-selected-item-supporting-text-color`	`sys.color.on-secondary-container`	#262626
`--tanrei-comp-navigation-drawer-selected-item-trailing-icon-color`	`sys.color.on-secondary-container`	#262626
`--tanrei-comp-navigation-drawer-selected-item-trailing-text-color`	`sys.color.on-secondary-container`	#262626
`--tanrei-comp-navigation-drawer-selected-pressed-item-container-color`	—	#262626 · 24.4%
`--tanrei-comp-navigation-drawer-selected-pressed-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-selected-pressed-item-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-pressed-item-label-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-pressed-item-state-layer-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-pressed-item-supporting-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-pressed-item-trailing-icon-color`	—	#262626
`--tanrei-comp-navigation-drawer-selected-pressed-item-trailing-text-color`	—	#262626
`--tanrei-comp-navigation-drawer-sticky-container-color`	`comp.navigation-drawer.container.color.standard`	#ffffff
`--tanrei-comp-navigation-drawer-sticky-divider-color`	`sys.color.outline-variant`	#000000 · 8%
`--tanrei-comp-navigation-drawer-sticky-divider-width`	`sys.border.hairline`	1px
`--tanrei-comp-navigation-drawer-unselected-disabled-item-container-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-unselected-disabled-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-unselected-disabled-item-icon-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-unselected-disabled-item-label-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-unselected-disabled-item-state-layer-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-unselected-disabled-item-supporting-text-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-unselected-disabled-item-trailing-icon-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-unselected-disabled-item-trailing-text-color`	—	#1b1b1b · 38%
`--tanrei-comp-navigation-drawer-unselected-focused-item-container-color`	—	#4b4b4b · 10%
`--tanrei-comp-navigation-drawer-unselected-focused-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-unselected-focused-item-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-focused-item-label-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-focused-item-state-layer-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-focused-item-supporting-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-focused-item-trailing-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-focused-item-trailing-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-hovered-item-container-color`	—	#4b4b4b · 8%
`--tanrei-comp-navigation-drawer-unselected-hovered-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-unselected-hovered-item-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-hovered-item-label-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-hovered-item-state-layer-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-hovered-item-supporting-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-hovered-item-trailing-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-hovered-item-trailing-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-item-container-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-unselected-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-unselected-item-icon-color`	`sys.color.on-surface-variant`	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-item-label-color`	`sys.color.on-surface-variant`	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-item-state-layer-color`	`comp.navigation-drawer.unselected.item.label.color`	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-item-supporting-text-color`	`sys.color.on-surface-variant`	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-item-trailing-icon-color`	`sys.color.on-surface-variant`	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-item-trailing-text-color`	`sys.color.on-surface-variant`	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-pressed-item-container-color`	—	#4b4b4b · 10%
`--tanrei-comp-navigation-drawer-unselected-pressed-item-icon-indicator-color`	—	#000000 · 0%
`--tanrei-comp-navigation-drawer-unselected-pressed-item-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-pressed-item-label-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-pressed-item-state-layer-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-pressed-item-supporting-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-pressed-item-trailing-icon-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-unselected-pressed-item-trailing-text-color`	—	#4b4b4b
`--tanrei-comp-navigation-drawer-collapsed-item-label-typescale`	`sys.typescale.label-small`	500 12px/1.3333
`--tanrei-comp-navigation-drawer-filter-shortcut-typescale`	`sys.typescale.label-small`	500 12px/1.3333
`--tanrei-comp-navigation-drawer-filter-status-typescale`	`sys.typescale.body-small`	400 13px/1.5385
`--tanrei-comp-navigation-drawer-header-typescale`	`sys.typescale.heading-5`	500 16px/1.5
`--tanrei-comp-navigation-drawer-heading-typescale`	`sys.typescale.label-small`	500 12px/1.3333
`--tanrei-comp-navigation-drawer-item-label-typescale-compact`	`sys.typescale.label`	500 14px/1.4286
`--tanrei-comp-navigation-drawer-item-label-typescale-regular`	`sys.typescale.label`	500 14px/1.4286
`--tanrei-comp-navigation-drawer-item-supporting-text-typescale`	`sys.typescale.body-small`	400 13px/1.5385
`--tanrei-comp-navigation-drawer-item-trailing-text-typescale`	`sys.typescale.body-small`	400 13px/1.5385

Fixtures

Representaciones canónicas. Todas las plataformas capturan cada fixture con el mismo identificador para poder comparar los resultados.

`variant: standard` (45)

standard

open: true value: inbox label: Mail items: 2 Dibujado por separado en una ventana de 256 × 560

standard-no-icons

open: true value: deployments label: Project items: 4 Dibujado por separado en una ventana de 256 × 560

standard-disabled

open: true value: inbox label: Mail items: 4 Dibujado por separado en una ventana de 256 × 560

collapsible-expanded

open: true collapsible: true expanded: true value: inbox label: Mail items: 6 slots: header Dibujado por separado en una ventana de 256 × 560

collapsed

open: true collapsible: true expanded: false value: inbox label: Mail items: 6 slots: header Dibujado por separado en una ventana de 88 × 560

collapsed-labels-always

open: true collapsible: true expanded: false collapsedLabels: always value: inbox label: Mail items: 5 Dibujado por separado en una ventana de 88 × 560

collapsed-labels-selected

open: true collapsible: true expanded: false collapsedLabels: selected value: starred label: Mail items: 5 Dibujado por separado en una ventana de 88 × 560

collapsed-badges

open: true collapsible: true expanded: false value: inbox label: Mail items: 5 Dibujado por separado en una ventana de 88 × 560

collapsed-disabled

open: true collapsible: true expanded: false value: inbox label: Mail items: 5 Dibujado por separado en una ventana de 88 × 560

collapsed-short-labels

open: true collapsible: true expanded: false collapsedLabels: always value: shared-with-me label: Files items: 5 Dibujado por separado en una ventana de 88 × 560

trailing

open: true value: inbox label: Mail items: 5 Dibujado por separado en una ventana de 256 × 560

groups

open: true value: website label: Workspace items: 4 Dibujado por separado en una ventana de 256 × 560

groups-nested

open: true value: tokens label: Docs items: 1 Dibujado por separado en una ventana de 256 × 560

nested-icons

open: true chevron: end value: website label: Workspace items: 3 Dibujado por separado en una ventana de 256 × 560

compact

open: true density: compact chevron: end value: tree-view label: Workspace items: 3 Dibujado por separado en una ventana de 256 × 560

compact-collapsed

open: true collapsible: true expanded: false density: compact value: inbox label: Mail items: 6 Dibujado por separado en una ventana de 72 × 560

chevron-end

open: true chevron: end value: posts label: Workspace items: 3 Dibujado por separado en una ventana de 256 × 560

chevron-none

open: true chevron: none value: posts label: Workspace items: 3 Dibujado por separado en una ventana de 256 × 560

guides

open: true guides: shown value: posts label: Workspace items: 3 Dibujado por separado en una ventana de 256 × 560

guides-chevron-none

open: true chevron: none guides: shown value: posts label: Workspace items: 3 Dibujado por separado en una ventana de 256 × 560

indent-zero

open: true chevron: end indent: 0 value: posts label: Workspace items: 3 Dibujado por separado en una ventana de 256 × 560

highlight-full

open: true chevron: end highlight: full value: posts label: Workspace items: 3 Dibujado por separado en una ventana de 256 × 560

icon-space

open: true chevron: end value: inbox label: Mail items: 4 Dibujado por separado en una ventana de 256 × 560

not-expandable

open: true expandable: false value: color label: Docs items: 2 Dibujado por separado en una ventana de 256 × 560

supporting

open: true chevron: end value: inbox label: Mail items: 3 Dibujado por separado en una ventana de 256 × 560

one-line

open: true chevron: end value: long label: Projects items: 2 Dibujado por separado en una ventana de 256 × 560

label-wrap

open: true chevron: end labelWrap: true supportingWrap: true value: long label: Projects items: 2 Dibujado por separado en una ventana de 256 × 560

group-loading

open: true chevron: end value: inbox loadingLabel: Loading… label: Mail items: 2 Dibujado por separado en una ventana de 256 × 560

sticky

open: true chevron: end value: a-3-4 scrollOffset: 220 stickyParents: true label: Archive items: 2 Dibujado por separado en una ventana de 256 × 560

group-closed-selected

open: true value: website label: Workspace items: 3 Dibujado por separado en una ventana de 256 × 560

selectable-groups

open: true value: components selectableGroups: true label: Documentation items: 4 Dibujado por separado en una ventana de 256 × 560

collapsed-groups

open: true collapsible: true expanded: false value: website label: Workspace items: 4 Dibujado por separado en una ventana de 88 × 560

responsive-wide

collapsible: true responsive: true value: inbox label: Mail items: 6 slots: header Dibujado por separado en una ventana de 1280 × 640

responsive-medium

collapsible: true responsive: true value: inbox label: Mail items: 6 Dibujado por separado en una ventana de 800 × 640

responsive-narrow

open: true collapsible: true responsive: true value: inbox label: Mail items: 6 slots: header Dibujado por separado en una ventana de 400 × 640

site-sidebar

open: true value: /components/navigation-drawer/ revealSelected: true label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 560

site-sidebar-long

open: true value: /components/navigation-drawer/ label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 800

site-sidebar-restored

open: true value: /components/navigation-drawer/ scrollOffset: 2900 label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 800

filter-empty-field

open: true value: /components/navigation-drawer/ revealSelected: true filterable: true filterLabel: Filter navigation filterPlaceholder: Filter filterEmptyText: No matches filterCountText: Matches: {count} filterClearLabel: Clear label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 560

filter

open: true value: /components/navigation-drawer/ revealSelected: true filterable: true filterValue: dr filterLabel: Filter navigation filterPlaceholder: Filter filterEmptyText: No matches filterCountText: Matches: {count} filterClearLabel: Clear label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 560

filter-count-hidden

open: true value: /components/navigation-drawer/ revealSelected: true filterable: true filterValue: dr filterLabel: Filter navigation filterPlaceholder: Filter filterEmptyText: No matches filterCountText: Matches: {count} filterCountHidden: true filterClearLabel: Clear label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 560

filter-group

open: true value: /components/navigation-drawer/ revealSelected: true filterable: true filterValue: found filterLabel: Filter navigation filterPlaceholder: Filter filterEmptyText: No matches filterCountText: Matches: {count} filterClearLabel: Clear label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 560

filter-matches

open: true value: /components/navigation-drawer/ revealSelected: true filterable: true filterValue: nav filterLabel: Filter navigation filterPlaceholder: Filter filterEmptyText: No matches filterCountText: Matches: {count} filterClearLabel: Clear label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 560

filter-none

open: true value: /components/navigation-drawer/ revealSelected: true filterable: true filterValue: zzz filterLabel: Filter navigation filterPlaceholder: Filter filterEmptyText: No matches filterCountText: Matches: {count} filterClearLabel: Clear label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 560

filter-compact

open: true density: compact value: /components/navigation-drawer/ revealSelected: true filterable: true filterValue: o filterLabel: Filter navigation filterPlaceholder: Filter filterEmptyText: No matches filterCountText: Matches: {count} filterClearLabel: Clear label: Documentation items: 5 Dibujado por separado en una ventana de 256 × 560

`variant: modal` (3)

modal

variant: modal open: true value: inbox label: Mail items: 2 Dibujado por separado en una ventana de 480 × 640

modal-collapsible-closed

variant: modal open: false collapsible: true value: inbox label: Mail items: 5

modal-collapsible-open

variant: modal open: true collapsible: true value: inbox label: Mail items: 5 slots: header Dibujado por separado en una ventana de 480 × 640

Generado a partir de specs/navigation-drawer.spec.json, tokens/comp/navigation-drawer.tokens.json, design/tokens/

Pautas

Cuándo usarlo

Usa un panel de navegación cuando un producto tenga más destinos de los que caben en una barra de navegación, o cuando sus destinos se repartan en grupos: las carpetas y etiquetas de una aplicación de correo, las secciones de un proyecto, un área de administración. En una ventana grande, un panel estándar se sitúa junto al contenido como barra lateral. En una ventana compacta, un panel modal se desliza sobre el contenido desde un botón de menú y desaparece en cuanto se elige un destino.

Cómo elegir entre la barra y el panel

Aspecto	Barra de navegación	Panel de navegación, contraído	Panel de navegación, expandido
Dónde se sitúa	A lo largo del borde inferior	Una columna de iconos a lo largo del borde de inicio	En un panel en el borde de inicio
Ventana	Compacta	Media y más anchas	Expandida y más anchas (estándar), o compacta (modal)
Destinos	De tres a cinco	Sus destinos y grupos de nivel superior, una celda cada uno	Tantos como tenga el producto, en secciones y grupos
Un destino	Un icono sobre una etiqueta de una línea, con una insignia sobre el icono	La fila cortada después de su icono: el icono solo, con una insignia encima y su nombre en un tooltip	Una fila: un icono opcional, una etiqueta que salta de línea y, al final, texto o contenido final
También contiene	Nada más	Una cabecera: el botón de menú y la acción principal, contraída a su icono	Una cabecera: el botón de menú, un título o un selector de cuentas, y la acción principal
En las plataformas nativas, un destino es	Una pestaña de una barra de pestañas	Un botón con un estado seleccionado	Un botón con un estado seleccionado
Qué es	Una región del diseño	Una región del diseño, o una columna del diseño desde la que se ensancha un panel modal	Estándar: una región del diseño. Modal: una superposición modal

El panel contraído es el carril de navegación. Un panel que se puede contraer se estrecha hasta una columna de iconos allí donde el contenido necesita el ancho, y su botón de menú lo vuelve a ensanchar; todos los iconos se quedan donde están. El carril de navegación que Tanrei tenía aparte queda retirado e integrado en esta forma.
La barra y el panel son un mismo conjunto de destinos en dos lugares. Reciben los mismos destinos y la misma selección, así que un producto que se adapta a la ventana cambia la barra por el panel en un punto de ruptura sin tocar sus destinos. Muestra uno de los dos cada vez, nunca ambos.
En el panel cabe más. Úsalo expandido cuando el producto tenga más destinos de los que caben en una barra, o cuando se repartan en grupos, como las carpetas y etiquetas de una aplicación de correo. En una ventana grande, un panel estándar se sitúa junto al contenido. En una compacta, un panel modal se desliza sobre él desde un botón de menú.
Un panel modal que se puede contraer mantiene su columna de iconos en el diseño y se ensancha sobre el contenido, por encima de un velo, cuando su botón de menú lo abre.
En todas las plataformas, ambos seleccionan por el valor de un destino (Compose con un parámetro en cada elemento, Flutter por índice) y emiten change y reselect.

Adónde fue a parar el carril de navegación

Tanrei no tiene un carril de navegación propio: el carril es un panel que se puede contraer, contraído.

Antes	Ahora
Carril de navegación	Un panel de navegación con `collapsible` y con `expanded` en false
El destino del carril, un icono sobre su etiqueta	Un destino que, contraído, se dibuja como su fila cortada después de su icono: el icono solo, con su nombre en un tooltip
La visibilidad de las etiquetas del carril	`collapsedLabels`: `never` (el valor predeterminado), `selected` o `always`. Los dos últimos dibujan el `shortLabel` debajo del icono
La insignia del carril sobre el icono	`badge`, `badgeCount` y `badgeLabel` de un destino, dibujados en las dos formas
El botón de menú y el FAB del carril	El primer `header-button` del panel, que es su botón de menú, y su `main-action`, contraída a su icono
El texto `badge` del panel al final de la fila	`trailingText`, o el slot `trailing`
Los tokens del carril	`comp.navigation-drawer.collapsed.*` y las condiciones de la forma contraída

La web lo implementa; SwiftUI, Compose, Flutter y React Native siguen ofreciendo su carril de navegación aparte, que estas páginas ya no documentan, hasta que se pongan al día.

Los nombres de Material 3

Material 3	Tanrei
Navigation rail	Un panel de navegación que se puede contraer, contraído
Expanded navigation rail	Un panel de navegación que se puede contraer, expandido
Modal expanded navigation rail	Un panel de navegación modal que se puede contraer
Navigation drawer	Un panel de navegación que no se puede contraer

Cómo elegir una variante

Variante	Qué es	Úsala para
Standard (predeterminada)	Un panel en el diseño, con una línea fina en su borde de fin. El contenido que tiene al lado cambia de tamaño cuando se abre y se cierra. No dibuja velo y permanece abierto mientras la persona trabaja en el contenido.	Ventanas anchas, donde el panel puede quedarse abierto como barra lateral.
Modal	Un panel elevado, con las esquinas del lado de fin redondeadas, que se desliza sobre el contenido por encima de un velo. Mantiene el foco hasta que se cierra, y se cierra solo cuando se elige un destino.	Ventanas compactas, abierto desde un botón de menú situado en la barra de la aplicación o en la cabecera de un panel contraído.

Un sistema de diseño puede añadir variantes. Una variante que añada se comporta como la estándar.

Apertura, foco y cierre

Abrir un panel estándar. Entra deslizándose mientras el contenido que tiene al lado le hace sitio. Cuando lo abres en respuesta a la persona, por ejemplo desde un botón de menú, el foco pasa al destino actual o, si no lo hay, al primer elemento del panel que puede recibir el foco. Un panel que está abierto desde el principio no mueve el foco.
Trabajar junto a un panel estándar. Tab pasa del panel al contenido, y el panel sigue abierto. Si se cierra mientras el foco está dentro, el foco vuelve a donde estaba antes de abrirlo.
Abrir un panel modal. Entra deslizándose desde el borde de inicio mientras el velo aparece con un fundido sobre el resto de la ventana. El foco pasa al destino actual o, si no lo hay, al primer elemento que puede recibir el foco, y se queda en el panel. Todo lo que hay detrás queda inerte para el puntero, los toques, el teclado y la tecnología de apoyo.
Cerrar un panel modal. Una pulsación en el velo, Escape, la acción de retroceso de la plataforma, un arrastre hacia el borde de inicio que supere la mitad de su ancho o un lanzamiento en esa dirección, y la elección de un destino: cada una de estas acciones lo cierra una sola vez. El panel sale deslizándose, el velo se desvanece y el foco vuelve al elemento que lo tenía.
No se abre deslizando desde el borde. En iOS, el borde de inicio de la pantalla es el gesto de retroceso, así que un panel nunca se abre desde ahí. Ábrelo desde un botón de menú visible.
Donde el movimiento está reducido, el panel se abre y se cierra al instante.

Contraer el panel

collapsible da al panel su forma contraída, de 72 de ancho: el panel expandido sin sus etiquetas. Cada destino y cada grupo de nivel superior es su fila cortada después de su icono, de 48 por 48 y con las esquinas de la fila, y el seleccionado se rellena exactamente igual que su fila. Los botones de la cabecera se apilan en la columna y la acción principal se contrae a su icono. Los títulos de sección conservan sus filas sin texto, y el slot de la cabecera y el contenido final no se dibujan.
Una celda contraída muestra su nombre en un tooltip, hacia el lado del contenido: tras el retardo del tooltip mientras un puntero se detiene sobre la celda, de inmediato con el foco del teclado y nunca con una pantalla táctil. La etiqueta ya es el nombre accesible de la celda, así que el tooltip no añade nada a lo que se lee.
expanded elige la forma de un panel estándar que se puede contraer. Un panel modal que se puede contraer mantiene su columna en el diseño mientras está cerrado, y open lo ensancha sobre el contenido, por encima de un velo.
El botón de menú es el primer header-button. Mientras el panel se puede contraer, se expone como expandido o contraído y como el control que gobierna el panel, y al activarlo emite expandedChange con la forma solicitada. La web la aplica por sí misma; en las demás plataformas defines expanded u open a partir de ese evento. Tú eliges su glifo y su nombre.
collapsedLabels elige qué celdas dibujan una etiqueta corta debajo del icono: never, que es el valor predeterminado, la selected o always. Una columna con etiquetas es para un producto o un sistema de diseño que la quiera. En ese caso, una celda dibuja su shortLabel, o su etiqueta si no le das ninguno, y no muestra tooltip. En ambos casos la etiqueta sigue siendo el nombre accesible.
Todos los iconos se quedan en su sitio. Los iconos están en una misma columna y en una misma línea en las dos formas, y cada celda conserva su altura, de modo que el cambio de forma solo mueve el borde de fin: las etiquetas se desvanecen cuando el borde pasa por ellas y, en una columna con etiquetas, las etiquetas cortas aparecen con un fundido. Un grupo abierto es la única excepción: el panel contraído no dibuja sus elementos, así que las celdas de debajo suben. El glifo de la acción principal queda en la misma línea que los iconos de los destinos en las dos formas, en cualquier tamaño del botón y en cualquier densidad: el panel coloca el botón a partir de sus propios tokens. Un cuadrado contraído más ancho que la columna (una acción principal grande en el sistema por defecto) sobresale del borde de la columna, y las compilaciones de depuración lo notifican; usa la pequeña o la mediana, y la pequeña en un panel compacto, donde el cuadrado mediano llena la columna.
La selección cambia de color en su sitio. Una nueva selección cambia el color de las filas allí donde están, expandidas o contraídas. Nada crece, se encoge ni se desliza para mostrarla.

Densidad

regular, el valor por defecto, tiene filas de 48 con glifos de 24, la altura de un elemento de menú, para un producto que se usa tanto con el tacto como con puntero.
compact tiene las filas compactas de una vista de árbol: 32 de alto con glifos de 16, 8 dentro de cada fila, 2 entre filas y 28 para un encabezado, y una columna de iconos de 56 de ancho al contraerse. Úsala en una herramienta que se usa con puntero y cuyo panel enumera muchos lugares, como un explorador de archivos o la barra lateral de un editor.
Los iconos anidados se alinean en ambas densidades. El contenido de cada nivel empieza una sangría más adentro, y la sangría es el icono y el espacio de la densidad, así que el icono de un destino anidado queda donde empieza la etiqueta de su grupo y los iconos de un nivel forman una sola columna.
El tacto conserva su objetivo. Con el tacto, una fila compacta se dibuja al menos con la altura del objetivo táctil. Con puntero, su área de pulsación es la fila y la mitad del espacio a su alrededor: menos que el objetivo de puntero, pero aún por encima de los 24 de WCAG 2.5.8.
Un sistema de diseño cambia lo que significa compacto, o añade una densidad, mediante los tokens .compact del panel, como comp.navigation-drawer.item.container.height.compact.

Filas compartidas con la vista de árbol

Los mismos parámetros que la vista de árbol, con los mismos nombres y significados: chevron, guides, indent, highlight, iconSpace, expandable, labelWrap y supportingWrap, el supportingText y el supportingPosition de una fila, y stickyParents con stickyMax.
chevron: start, el valor por defecto, dibuja el chevron de un grupo antes de su icono y reserva su espacio en todas las filas, para que los iconos de un nivel se alineen; end lo dibuja al final de la fila, después del contenido final; none no dibuja ninguno, y pulsar el icono de un grupo lo abre y lo cierra, mostrando su openIcon mientras está abierto. Un panel que se puede contraer dibuja start como end, para que cada icono conserve su sitio en las dos formas, y un panel sin grupos no reserva ese espacio.
indent: auto alinea la primera parte de una fila con donde empieza la etiqueta de su grupo, y avanza la sangría del nivel donde el grupo no dibuja nada antes de su etiqueta; un número avanza esos píxeles, y 0 nada. La etiqueta de una fila nunca empieza más allá de la mitad del ancho del panel.
highlight: indented, el valor por defecto, empieza el relleno y las capas de estado de una fila anidada donde empieza la fila; full los dibuja a lo ancho en todos los niveles.
iconSpace reserva el espacio de un icono en una fila sin él, para que las etiquetas de un nivel se alineen: auto donde otra fila del nivel tiene icono, always o never.
expandable en false muestra todos los grupos abiertos y sin chevron; la fila de un grupo nombra entonces sus elementos y no es un control.
guides: shown dibuja una línea junto a los elementos de un grupo abierto, bajo su chevron, si no bajo su icono, si no al inicio de su etiqueta; hover solo mientras el puntero está sobre el panel o el foco está dentro.
Una línea. Las etiquetas y el texto de apoyo ocupan una línea, cortada con puntos suspensivos, y una fila cortada muestra su texto completo en un tooltip al pasar el puntero y con el foco de teclado; labelWrap y supportingWrap permiten que se ajusten. El nombre accesible siempre es la etiqueta completa.
El texto de apoyo va bajo la etiqueta (below) o después de ella (inline), y se lee como la descripción de la fila.
Un grupo admite texto o contenido final antes de un chevron final, un openIcon y loading, que dibuja una fila de carga bajo sus elementos, con el nombre del loadingLabel del panel.
stickyParents, desactivado por defecto en el panel y activado en la vista de árbol, fija las filas de los grupos abiertos a los que pertenecen las filas de arriba, como mucho stickyMax (2), primero las interiores, como hace el desplazamiento fijo de un editor. No se aplica con el panel contraído.

Seguir el ancho de la ventana

responsive deja que el ancho de la ventana elija cómo se presenta el panel, a partir de los dos puntos de ruptura de su sistema de diseño (1024 y 600 en el sistema predeterminado). En ese caso, variant se ignora.

Ventana	Presentación	Qué es el panel
Como mínimo, el punto de ruptura más ancho	`standard`	Un panel estándar junto al contenido, que se muestra diga lo que diga `open` y que se puede contraer en la forma que elija `expanded`
Como mínimo, el más estrecho, mientras sea `collapsible`	`column`	Un panel modal que se puede contraer: su columna de iconos en el diseño, que se ensancha sobre el contenido mientras `open` está activado
Más estrecha que eso	`modal`	Un panel modal que no se puede contraer

La presentación se deriva, nunca se guarda. Depende únicamente del ancho: el panel no la escribe en variant, open ni expanded. presentationChange dice cuál es, la primera vez y cada vez que el ancho la cambia.
Se entra cerrado en una presentación nueva. Se dibuja de inmediato, sin movimiento. Una superposición que estaba abierta se retira y close se emite una vez. expanded, value y el open de cada grupo se conservan, de modo que la presentación standard vuelve en la forma en que se dejó.
En la presentación modal, el botón de menú es cosa tuya. Muestra un botón de menú propio, por ejemplo en la barra de la aplicación, mientras la presentación sea modal, y define open desde él. Ahí, el botón de menú del propio panel solo lo cierra.
El panel no recuerda nada entre visitas. Para conservar la forma que eligió una persona, guarda lo que lleva expandedChange y define expanded a partir de ello.

Como barra lateral de un sitio

Da un href a cada destino y, al panel, la dirección de la propia página como value, y el panel será la barra lateral de un sitio de documentos.

La página dice dónde está. Una pulsación nunca selecciona un enlace. Cada página define value como su propio destino: como el value de ese destino o, si no tiene, como su href tal como está escrito.
revealSelected abre los grupos que contienen el destino seleccionado cuando el panel aparece por primera vez, en su primer fotograma y sin movimiento, y de nuevo cada vez que value cambia. Un grupo que la persona cierre después permanece cerrado hasta que value cambie.
La selección está a la vista al llegar. Cuando el panel aparece, y cada vez que value cambia, la fila que muestra la selección se lleva al centro de las filas desplazables si no estaba completamente a la vista, y no se mueve en absoluto si lo estaba. Así, una barra lateral cuya página actual ya está a la vista se queda donde está de una página a otra. El foco no se mueve.
scrollOffset lee y define cuánto se han desplazado las filas. El panel no guarda nada. Un sitio que quiera que un árbol largo se quede donde lo dejó quien lo lee guarda por su cuenta el desplazamiento y el open de cada grupo, por ejemplo en el almacenamiento de la sesión, y los devuelve antes del primer fotograma. Un grupo que contiene la página actual se abre de todos modos, y la selección prevalece sobre un desplazamiento que la dejaría fuera de la vista.
Un enlace que sale del sitio lleva target en new. Se abre en una pestaña nueva, su fila expandida termina con el open_in_new del conjunto de iconos salvo que pongas ahí contenido final, y targetLabel se lee después de su nombre. El texto es tuyo («se abre en una pestaña nueva»): Tanrei no incluye ninguno.
Un enrutador escucha change. Se emite antes de que el navegador siga un enlace, y solo para una activación corriente: el botón principal sin tecla modificadora, un toque o Enter, en un enlace cuyo target es same. Cancélalo y ve al href que lleva. Un enlace abierto en otra pestaña no emite nada y deja abierto un panel modal.

Filtrado

Un filtro reduce el panel en su sitio; no es una búsqueda. La búsqueda recorre el contenido de todas las páginas y muestra lo que encontró en una vista propia. El filtro solo mira las etiquetas de los lugares que el panel ya enumera y los deja donde están, de modo que quien conoce el nombre de una página llega a ella con dos teclas, “/” y sus primeras letras, y la ve entre sus vecinas. Da a cada uno su propia tecla: “/” para el filtro, como hacen los sitios de documentación con un filtro en la barra lateral, y ⌘K o Ctrl+K para la búsqueda.

Qué coincide. Una fila coincide cuando su etiqueta contiene todas las palabras escritas, cada una en cualquier lugar y en cualquier orden, sin distinguir mayúsculas de minúsculas, el ancho de un carácter ni los signos diacríticos: «nav dr» encuentra «Navigation drawer», y «resume» encuentra «Résumé». Solo se compara la etiqueta, no el texto de apoyo, el texto final ni la dirección. No se descarga, clasifica ni reordena nada: un producto que busca coincidencias en un servidor, con una clasificación o en algo más que la etiqueta deja filterable desactivado y da al panel las filas que coinciden, como hasta ahora.
Lo que queda. Las filas que no coinciden se ocultan. Los grupos que contienen una coincidencia se quedan, y un grupo encontrado por su propio nombre se queda entero; una sección que se queda sin filas se oculta con su encabezado.
Los grupos se abren de forma temporal. Un grupo cerrado que contiene una coincidencia se dibuja abierto para el filtro. Su open no cambia y no se emite toggle, así que al vaciar el campo vuelve a cerrarse. Un grupo que la persona abre o cierra mientras filtra es suyo: se queda como lo dejó.
La primera coincidencia está lista para tomarla. Mientras el foco está en el campo, la primera fila que coincide se dibuja como la fila con el foco. Enter la toma, como lo haría Enter en esa fila, y Flecha abajo lleva el foco a ella; se sigue escribiendo en el campo. Escape vacía el campo, y si se pulsa otra vez, devuelve el foco a donde estaba antes de “/”.
“/” lleva al campo desde cualquier parte de la página, salvo cuando el foco está en un campo de texto, donde escribe una barra. Un panel contraído se expande primero. filterShortcut cambia la tecla, y una lista vacía no asigna ninguna, para un producto que ya usa “/”. En una ventana estrecha, la estructura de la aplicación abre un panel cerrado con esa tecla y pone el foco en su campo.
El recuento. Mientras hay un filtro aplicado, una línea discreta al principio de los resultados dice cuántas filas coinciden (filterCountText), o filterEmptyText cuando no coincide ninguna. filterCountHidden no dibuja el recuento; se sigue comunicando a la tecnología de apoyo.
Las coincidencias no se marcan. Las filas que deja el filtro son la respuesta, así que cada fila se ve igual que sin filtro, como en el árbol de archivos de una revisión de código o en la barra lateral de un sitio de documentación.
No se guarda nada. El panel olvida el texto cuando desaparece. Guarda filterValue desde filterChange y devuélvelo en la página siguiente si el filtro debe acompañar a quien lee.

Filas, grupos y secciones

Las filas miden al menos 48 de alto, la altura de un elemento de menú, con sus esquinas. Una etiqueta ocupa una línea y se corta, salvo que labelWrap le permita ajustarse y la fila crezca con ella.
Da un icono a todos los destinos o a ninguno, para que las etiquetas queden alineadas. Un panel que se puede contraer dibuja cada destino y cada grupo de nivel superior por su icono mientras está contraído, así que da un icono a cada uno.
trailingText es un texto corto al final de la fila, más discreto que la etiqueta: un recuento («24») o una palabra («Nuevo»). Un recuento va aquí, como texto, y no en un Badge: un Badge marca un ancla, y el final de una fila no tiene ninguna que marcar; para marcar el icono, usa badge. El slot trailing contiene cualquier otra cosa, como un glifo; prevalece sobre trailingText y nunca es interactivo. Un enlace con target en new termina su fila con open_in_new por sí solo, así que no tienes que colocar ese glifo. El contenido final se lee después de la etiqueta y no se dibuja mientras el panel está contraído.
badge dibuja un Badge sobre el icono, en las dos formas: un punto, o badgeCount, con el nombre que le da badgeLabel.
La fila de un grupo abre y cierra los destinos y grupos que contiene, con su chevron donde lo pone chevron (arriba). Un grupo cerrado que contiene el destino seleccionado se dibuja seleccionado, y lo mismo ocurre con un grupo de nivel superior mientras el panel está contraído; activar un grupo con el panel contraído expande el panel y abre el grupo. No pases de tres niveles.
Un grupo que también es destino (selectableGroups, y un value o un href en el grupo) divide su fila como lo hace una vista de árbol: su chevron lo abre y lo cierra, el resto de la fila lo elige, y una pulsación nunca hace ambas cosas. El chevron es un control propio, después de la fila en el orden del foco, con un área de pulsación al menos tan ancha como el objetivo de puntero. Con el panel contraído, a diferencia de otro grupo, su celda lo elige y deja el panel contraído; a sus elementos se llega expandiendo el panel. revealSelected también abre un grupo así cuando es la página actual, de modo que la barra lateral de un sitio muestra las páginas de la sección que se ve.
El título de una sección da nombre a los destinos que tiene debajo. Es un encabezado, no un control. Una sección puede no tener título, como un grupo separado por un divisor y sin nombre.
El divider de una sección dibuja un divisor delante de ella, para separarla de lo que tiene encima. Nunca colocas un divisor por tu cuenta.
La cabecera contiene los botones de la cabecera, apilados en la columna de iconos, y la acción principal debajo de ellos. El slot de la cabecera se sitúa junto al botón de menú mientras el panel está expandido, para un título o un selector de cuentas, y no se dibuja mientras está contraído. El texto simple que se coloca ahí se dibuja con el estilo de título del panel (comp.navigation-drawer.header.typescale y comp.navigation-drawer.header.color); un elemento tuyo que define su propio estilo lo conserva.
Cuando las filas ocupan más alto que el espacio que queda bajo la cabecera, se desplazan y la cabecera se queda en su sitio. Un desplazamiento que llega a cualquiera de los dos extremos no continúa desplazando la página que hay detrás del panel.

Evita

No uses el panel para acciones como «Cerrar sesión» o «Redactar». Sus filas son lugares.
No anides una sección dentro de otra ni pongas una sección dentro de un grupo. Las compilaciones de depuración lo notifican y dibujan en su lugar los destinos de la sección interior.
No le des a un grupo un value o un href con selectableGroups desactivado esperando que su fila lo elija. Solo se abre y se cierra, y las compilaciones de depuración lo notifican.
No uses un panel modal en una ventana lo bastante ancha para uno estándar.
No uses el filtro en lugar de la búsqueda del sitio. Encuentra lugares por su nombre; quien busca una palabra en el contenido necesita la búsqueda.

Accesibilidad

Rol: navigation
Etiquetado: Each destination is named by its label in both forms, drawn or not, as a button or as a link; its icon is decorative; its badge's description and then its trailing content are part of its description. A group's row and the list of its items are named by the group's label. A section's heading is a heading. The drawer's label names the navigation landmark and, while the drawer is modal and open, the dialog. The menu button is named by its own label and carries the drawer's expanded state; the main action is named by its label in both forms. A collapsed drawer that draws no labels shows each cell's name where the platform shows a name for an icon alone (a tooltip on the web). The filter field is a search field named by filterLabel, the product's words, controlling the drawer's list; its clear button is named by filterClearLabel; its key hint is hidden and its chord is the field's keyboard shortcut. How many rows match is drawn at the top of the results, hidden from assistive technology, and said by a status of the drawer's own, in the product's filterCountText or filterEmptyText.
Objetivo mínimo: El área de pulsación cumple el tamaño mínimo de objetivo aunque el tamaño visual sea menor. minimum 32px · pointer 44px · spacing 8px · touch 48px

Teclado

Teclas	Acción
`Tab / Shift+Tab`	Moves focus through the header's content, then the destinations and group rows that are shown and not disabled, and after the row of a group that is a destination its chevron; inside an open modal drawer it wraps around and never leaves the drawer; from an open standard drawer, expanded or collapsed, it moves on to the content, and the drawer stays as it is.
`Enter` / `Space`	Activates the focused destination (Enter only for a destination that is a link: it follows the link, and Space is left to the platform), and a modal drawer then closes; on a group's row, opens or closes the group, or, for a group that is a destination (NVD-66), activates it as a destination and leaves it as it is; on that group's chevron, opens or closes the group; on a group's cell in the collapsed drawer, expands the drawer with the group open; on the menu button, changes the drawer's form.
`Enter with a modifier key, on a link (the web)`	What the browser does with a link: another tab or window, a download. The drawer emits nothing, selects nothing and stays as it is (NVD-60).
`Right arrow / Left arrow (mirrored in right-to-left layouts)`	On a closed group's row, the arrow toward the end of the line opens it; on an open group's row, the arrow toward the start closes it; on an item inside an open group, the arrow toward the start moves focus to the group's row. Elsewhere the keys do nothing.
`Escape`	Closes an open modal drawer (a collapsible one narrows back to its column) and returns focus to where it was.
`/ (the filterShortcut chord, anywhere in the window)`	WHILE filterable is true and the drawer is shown: moves focus to the filter field, expanding a collapsed drawer first. It types "/" while focus is in a text field.
`Enter (in the filter field)`	Takes the first row that matches — the active match, drawn as a focused row while focus stays in the field — as Enter on that row would: a destination is activated, a group's row opens or closes.
`Down Arrow (in the filter field)`	Moves focus to the active match.
`Escape (in the filter field)`	With text: empties the field and keeps focus there. Empty: returns focus to where it was before "/", or passes on (a modal drawer closes).
`Escape (on a row, while a filter is applied)`	A standard drawer: empties the filter and keeps focus on the row, which stays in view among its neighbours. A modal drawer: closes, as without a filter.

Notas

The drawer is a list of places, not a tab bar, in both forms: on native platforms its destinations are buttons (or links) with the selected state (as iPadOS sidebars and Android's drawer items are read), and on the web links or buttons with aria-current in a navigation landmark. The collapsed form keeps these semantics; it does not become a tab bar.
Selected and the current page are one thing. The drawer lists the product's places and the selected one is the place being shown, which the web exposes as aria-current="page" on a button and on a link alike. A site of separate pages changes who says which it is — the page, through value, not a press — and nothing else: no destination is ever selected and another current, so a second state would have no case to draw.
A drawer of links is a navigation landmark holding lists of links and disclosure buttons, the pattern assistive technology users know from site navigation: every link and every group's row is its own Tab stop, and the arrow keys only open, close and leave a group. It is deliberately not a choice per use. One Tab stop with roving arrow keys is a tree's or a menu's model, would hide links from the browser's own ways of listing and following them, and would make the same component answer the keyboard in two ways. A long tree is passed by the landmark, by the headings of its sections, by closing its groups, and by the page's skip link.
Showing the selection (NVD-57, NVD-58) scrolls the drawer and opens groups without moving focus and without an announcement: the page's own title and heading say where the user is, and the current destination carries its state for whoever reaches it.
Groups are disclosures, not a tree: a group's row is a button with an expanded state that shows or hides a named list, and every shown destination stays its own tab stop, as the links of a navigation region are. A tree's single tab stop and arrow-key roving would make the drawer's keyboard model depend on whether it has groups; the arrow keys here only open, close and leave a group.
A group that is a destination (selectableGroups, NVD-66) is the WAI-ARIA Authoring Practices' disclosure navigation menu with top-level links: its row is the link or button of its own page, with the current-page state, and its chevron a separate disclosure button for its items, each a Tab stop. The two are never one control: a row that both navigates and toggles would announce one action and do two, and a keyboard user could not open the group without leaving the page. The chevron is named by the group's label, as Tanrei ships no words of its own; its role and its expanded state tell it from the row.
Collapsing hides the header slot, the headings' text, trailing content and the items inside groups from assistive technology and focus; it changes no destination's role, name or state, and the menu button announces the change as its expanded state.
A responsive drawer (NVD-53 to NVD-55) changes what it is with the window's width — a layout region where the window is wide, a modal overlay where it is narrow — and each presentation has the semantics of the drawer it stands for. A change of presentation closes an open overlay, releases focus that was kept inside it and announces nothing by itself; the presentation is never the only way to reach a destination, because the product's menu button opens the modal presentation.
The standard form is a layout region, not an overlay, expanded or collapsed: opening it moves focus in, to the selected destination or else the first, closing it returns focus to where it was, and focus leaving it never closes it. The modal form is a modal overlay: it keeps focus in and draws a scrim; a collapsible modal drawer's column is a layout region while the drawer is closed. The web presents the open modal drawer with a modal <dialog> element (showModal gives inertness and Escape); Compose draws it in a window of its own (a Dialog, as TanreiDialog is) and Flutter as a controlled overlay in a Stack over the page, each with a scrim, trapping focus and answering back; SwiftUI, which has no side presentation, overlays it with the modal trait and the escape gesture; React Native presents it in a transparent Modal.
Opening a modal drawer by a swipe from the screen edge is left out: on iOS the same edge is the back gesture. The product opens it from a menu button.
How a state looks is a value decision of the active design system; components read the state's tokens and never compute the effect themselves.
A filter narrows the drawer in place; it is not a search. The site's search (the Search component, opened with ⌘K or Ctrl+K) looks through the content of every page and offers results in a view of its own; the filter looks only at the labels of the places the drawer already lists and leaves them where they are, so that a person who knows a page's name reaches it in two keys ("/" and its first letters) and sees it among its neighbours. The two keep separate keys: "/" for the filter, as documentation sites with a sidebar filter do, and the search's own chord.
Hidden rows are removed from what assistive technology is told, not only from view, so that every list position and size a person hears is the filter's (WCAG 1.3.1). The count is a status message (WCAG 4.1.3): said politely through a status of the drawer's own once typing pauses, never by moving focus, and drawn quietly at the top of the results unless the product hides it. The rows that match are not marked: what the filter leaves is the answer, as in a file tree's filter and a documentation site's sidebar, and the row Enter takes is drawn as a focused row (NVD-85, NVD-86), so that nothing is told by color alone (WCAG 1.4.1).
The field is a separate stop before the items, as a search field above a list is. As in a search, the first row that matches is active as soon as there is one while focus stays in the field: Enter takes it, as Enter on its row would, and Down Arrow moves focus to it, so that a keyboard user neither Tabs through every row the filter left nor leaves the field to reach the place they typed for. The active match is drawn as a focused row; it is not the field's active descendant, because a destination is a link or a button, which an input's active descendant is not (a search's results are not either), and a screen reader user meets it by Down Arrow, the count telling how many rows are left.

Generado a partir de specs/navigation-drawer.spec.json, tokens/sys/measure.tokens.json

De qué se encarga el componente

En la web, el panel es una región de referencia (landmark) de navegación que recibe su nombre de label. Cada destino es un enlace (con href) o un botón, y el actual lleva aria-current="page". Un panel modal es además un <dialog> modal que recibe su nombre de label.
En iOS, Android, Flutter y React Native, cada destino es un botón con su estado seleccionado y su posición entre los destinos, tal como se leen en esas plataformas las barras laterales y los elementos de un panel. Un panel modal es un contenedor modal que recibe su nombre de label: el rasgo modal, o un título de panel.
Un destino es un único elemento que recibe su nombre de su etiqueta, en las dos formas. Su icono queda oculto; la descripción de la insignia de su icono y, después, su contenido final se leen tras su nombre y su estado.
Un destino de enlace se dibuja exactamente igual que un destino de botón, en todos los estados, sin aspecto de enlace visitado. Conserva todo lo que un navegador da a un enlace: su menú contextual, la apertura en una pestaña nueva, el arrastre y la dirección al pasar el cursor. Uno que abre una pestaña nueva lee su targetLabel al final de su descripción.
El tooltip de una celda contraída es para las personas que ven la pantalla y usan un puntero o el teclado. Queda oculto para la tecnología de apoyo, que ya lee la etiqueta como nombre de la celda.
La fila de un grupo es un botón con un estado expandido que controla su lista anidada. Flecha derecha (en un diseño de izquierda a derecha) abre un grupo cerrado, Flecha izquierda cierra uno abierto, y Flecha izquierda dentro de un grupo lleva a su fila. Tab recorre todas las filas que se muestran.
Un grupo que también es destino es el menú de navegación desplegable con enlaces de nivel superior de las WAI-ARIA Authoring Practices: su fila es un enlace o un botón, con aria-current="page" mientras es la página actual, y su chevron es un botón aparte, con el nombre de la etiqueta del grupo y el estado expandido, que controla la lista anidada. Cada uno es una parada de Tab, y Flecha derecha y Flecha izquierda siguen abriendo y cerrando el grupo desde su fila.
Mientras el panel se puede contraer, su botón de menú se expone como expandido o contraído y como el control que gobierna el panel. Cuando la forma cambia, el foco se queda en la celda en la que estaba.
El título de una sección se expone como encabezado y no puede recibir el foco.
Tab recorre el contenido de la cabecera y todos los destinos que no están deshabilitados. Enter y Espacio activan el destino que tiene el foco (solo Enter, en el caso de un enlace en la web). Los destinos deshabilitados no reciben el foco y se anuncian como deshabilitados.
En un panel estándar, el foco entra cuando lo abres y vuelve cuando lo cierras, y Tab continúa hacia el contenido sin cerrarlo. En un panel modal, Tab y Mayús+Tab dan la vuelta dentro del panel, y Escape y la acción de retroceso de la plataforma lo cierran y devuelven el foco.
El anillo de foco se dibuja alrededor de la fila, solo para el foco del teclado. El foco del teclado en una fila que no está completamente a la vista la desplaza hasta dejarla a la vista con el menor recorrido posible.
El área de pulsación es la celda entera, en las dos formas, y nunca es menor que el objetivo mínimo.
Un texto más grande conserva el ancho de las dos formas y hace más altas las filas y los títulos. Las etiquetas saltan de línea; las etiquetas cortas se cortan. Los iconos no se escalan.
El campo del filtro es un campo de búsqueda con el nombre de filterLabel, delante de las filas, e indica que controla la lista del panel. Su botón de borrar se nombra con filterClearLabel, y su “/” se expone como su atajo de teclado (aria-keyshortcuts en la web), mientras que la pista de la tecla queda oculta para la tecnología de apoyo.
Las filas que oculta un filtro desaparecen también para la tecnología de apoyo, así que cada posición y tamaño que oye la persona son los del filtro. Cuando se deja de escribir durante un segundo, un estado propio del panel dice cuántas filas coinciden, o que no coincide ninguna, de forma cortés y sin mover el foco. El recuento dibujado al principio de los resultados está oculto para la tecnología de apoyo, que oye el estado en su lugar.
Una fila que coincide no se marca, así que nada se comunica solo con el color; la fila que toma Enter se dibuja como la fila con el foco, y el nombre de una fila sigue siendo su etiqueta entera.
Las compilaciones de depuración notifican un destino sin etiqueta, un panel modal sin label, un valor que no corresponde a ningún destino, un valor usado dos veces, una sección anidada, una sección dentro de un grupo, un anidamiento de más de tres niveles, una variante que el sistema de diseño no tiene, un panel que se puede contraer sin botón de menú, un elemento que puede recibir el foco en el slot trailing, un href que es una dirección javascript: o que no se puede leer, un target desconocido y un enlace con target en new y sin targetLabel. También notifican una densidad que el sistema de diseño no tiene y un grupo con value o href mientras selectableGroups está desactivado. Con un filtro, notifican un campo sin filterLabel, un botón de borrar sin nombre, un filterShortcut de más de una combinación y una combinación que ya tiene otro panel o una búsqueda.

Carencias conocidas por plataforma:

Web: Firefox no puede animar un elemento que sale de la capa superior, así que ahí un panel modal desaparece de golpe en lugar de salir deslizándose.
Web: todos los tamaños siguen a rem, así que un tamaño de texto mayor en el navegador también agranda los iconos, aunque nunca el ancho del panel. Agrandar solo la tipografía de Tanrei no lo hace.
Web: está probado que Tab sale de un panel estándar abierto, pero todavía no dónde va a parar en el contenido, algo que resultó inestable bajo carga.
SwiftUI no puede saber qué vista tenía el foco, así que al cerrar un panel el foco del teclado no vuelve a ningún elemento: la plataforma lo pone donde lo pone de forma predeterminada. Al abrir uno, el foco va al destino actual o, si no lo hay, al primer destino habilitado, nunca a un control de la cabecera. En un Mac, un panel modal cubre y deshabilita solo la vista a la que está asociado, así que asócialo a la raíz de la ventana.
SwiftUI: Escape, el gesto de escape de accesibilidad y la entrada del foco al abrir aún no se han probado de extremo a extremo. Un destino lleva su posición como texto de su valor («2 of 6»), solo en inglés.
Compose presenta el panel modal en una ventana Dialog propia, como TanreiDialog, en lugar de hacerlo dentro de la ventana de la aplicación, como el panel de Material. Se ve igual, y la ventana mantiene el foco dentro, responde a la acción de retroceso y oculta lo que hay detrás.
Compose no tiene un valor a nivel de panel, así que no hay nada que notificar cuando un valor no corresponde a ningún destino.
El panel modal de Flutter no es un Scaffold.drawer. Lo colocas como último hijo de un Stack que llena la ventana y lo controlas con open. Sus destinos no llevan su posición dentro del conjunto.
Flutter: donde una fila y su separación son más bajas que el objetivo táctil, como en un sistema de diseño con filas bajas, las filas se separan en lugar de que crezca solo el área de pulsación.
React Native no puede saber qué elemento tenía el foco, así que al cerrar el panel el foco no vuelve al elemento que lo abrió. Un panel modal deja el foco donde lo pone la plataforma, y un panel estándar no hace nada.
El panel de React Native todavía no tiene una propiedad insets propia: solo lee los de TanreiProvider. Un destino lleva su posición como texto de su valor, en inglés salvo que pases positionText.
React Native: el arrastre y el lanzamiento del panel modal, su movimiento del foco y el gesto de escape aún no se han comprobado en un dispositivo.
SwiftUI, Compose, Flutter y React Native, que ofrecen la revisión anterior: la primera fila queda media separación por debajo del margen interior del panel, y una fila cuya etiqueta ocupa varias líneas no crece igual en todas (SwiftUI y Compose mantienen la altura mínima de la fila hasta que el texto deja de caber en ella). Cada una medirá el margen interior hasta la primera celda y tratará la altura de la fila como un mínimo cuando se ponga al día.
Web: la primera coincidencia que el campo deja lista se dibuja como una fila con el foco, pero no es el descendiente activo del campo: un destino es un enlace o un botón, y un campo de entrada no puede tener ninguno de los dos como descendiente activo. Quien usa un lector de pantalla llega a ella con Flecha abajo.
SwiftUI, Compose, Flutter y React Native todavía no tienen el filtro.
Web: un panel modal que se puede contraer devuelve el foco solo cuando ha vuelto a estrecharse hasta su columna, un arrastre mueve el panel entero, y su diálogo se coloca sobre la caja de la columna tal como se midió al abrirse.

Qué debes hacer tú

Da una etiqueta a cada destino. Donde la columna contraída dibuje etiquetas (collapsedLabels), da un shortLabel cuando la etiqueta sea demasiado larga para ella.
Da a un enlace con target en new un targetLabel en el idioma de tu producto.
En un sitio, define value en cada página como el destino de esa misma página.
Mientras la presentación de un panel responsive sea modal, muestra un botón de menú propio que lo abra.
Da un nombre al botón de menú, como «Menú», y en las plataformas distintas de la web, define expanded u open a partir de expandedChange.
Da al panel un label, como «Correo». Un panel modal es un diálogo, y la etiqueta es su nombre.
Abre un panel modal desde un botón de menú visible con su propia etiqueta, como «Menú».
Mantén open sincronizado: ponlo en false cuando un panel modal se cierre (desde onClose, el binding o el estado del panel, según la plataforma).
En SwiftUI, devuelve tú el foco del teclado al botón de menú después de que el panel se cierre.
En React Native, devuelve tú el foco al botón de menú después de que el panel se cierre, pasa positionText en el idioma de tu producto y da a TanreiProvider los márgenes interiores de la ventana.
Mantén el valor de cada destino único y estable entre las formas estándar y modal.
Con filterable, da al campo un filterLabel que diga qué filtra («Filtrar navegación»), y da tus palabras para filterCountText, filterEmptyText, filterClearLabel y filterPlaceholder, en el panel o una sola vez en las palabras de tu producto.

Código fuente e incidencias en GitHub